Next Gen
Next Gen
CR-Flex and
 LPS-Flex Knees
Surgical Technique with
 Posterior Referencing
   Instrumentation
        Zimmer NexGen CR-Flex and LPS-Flex Knees
INTRO
        Surgical Technique with Posterior Referencing Instrumentation
        Introduction
        Instrumentation
        This Instrumentation provides for a simplified, yet versatile
        surgical experience for use with NexGen CR-Flex and
        LPS-Flex Knee components.
         Symbols
         As part of a new standard, symbols have been established
                                                                                                                          A/P
         for several words.                                                          Left          Right              Anterior/Posterior
         	     •	 Left
         	     •	 Right                                                       M/L                 FLEX                     Std
         	     •	 Anterior/Posterior
                                                                             Medial/Lateral          Flex                  Standard
         	     •	 Medial/Lateral
         	     •	 Flex
         	     •	 Standard
         	     •	 Lock
         	     •	 Unlock                                                               Lock                Unlock          Do not implant -
         	     •	 Do not implant – Not for implant                                                                         Not for implant
         	     •	 Do not impact
         	     •	 Posterior Referencing
         	     •	 Varus/Valgus
                                                                                Do not impact     Posterior Referencing       Varus/Valgus
         	     •	 Inset Only
       Table of Contents
       SECTION	                                        PAGE   SECTION	                                               PAGE
SECTION PAGE
                  2
                                                       Zimmer NexGen CR-Flex and LPS-Flex Knees
                                                                                                                 TOC
                                     Surgical Technique with Posterior Referencing Instrumentation
Table of Contents
SECTION	                                              PAGE   SECTION	                                     PAGE
SECTION PAGE
SECTION PAGE
SECTION PAGE
Implant Components 32
SECTION PAGE
APPENDIX PAGE
                                                                         Replacement of Femoral/Femoral
                                                                  B      Provisional Inserter Jaws
                                                                                                            40
APPENDIX PAGE
 1         Establish Femoral
                     the TibialAlignment
                                Platform
Insert
Fig. 2
Unlock
Fig. 3
Instruments
  1
                                                                                                                                                SECTION
                                                                                                      Establish
                                                                                                      Establish Femoral
                                                                                                                the Tibial
                                                                                                                         Alignment
                                                                                                                           Platform
                                                                                                                                                 1
         Place the Femoral Valgus Alignment Guide on the IM Rod                        2.) Rotate
         against the most prominent condyle and confirm the desired
         valgus setting. (Fig. 5)
                                                                                        1.) Retract
                                                                                                                       3.) Release Retraction
If the epicondyles are visible, the epicondylar axis may be used as           Fig. 4
a guide in setting the orientation of the Femoral Valgus Alignment
Guide. This does not set the rotation of the femoral component,
but keeps the distal cut oriented to the final component rotation. If
desired, the guide can be pinned to provide rotational stability. (Fig. 6)
Fig. 5
Fig. 6
Instruments
             Insert the resection guide with the cutting head into the
             alignment guide until the cutting head rests on the anterior
             femoral cortex. Verify the desired resection setting on the               Fig. 7
             resection guide and/or rotate the adjustment dial to attain
             the desired setting. (Fig. 9)
Make sure the desired captured cutting head is used, either 0° or 3°. Adjustment Dial
Instruments
              Femoral IM Rod   Modular T-Handle    Femoral Valgus    Distal Femoral    0° Captured/     3° Captured/
             00-5901-060-00    00-5901-061-00     Alignment Guide   Resection Guide     Uncaptured       Uncaptured
                                                  00-5901-067-00    00-5901-063-00     Cutting Head     Cutting Head
                                                                                      00-5901-064-00   00-5901-065-00
  3
                                                                                                                              SECTION
         Cut the distal femur through the cutting slot in the cutting
         head, using a 1.27mm (0.050 in.) oscillating saw blade                      Fig. 10
         (Fig. 12). If the optional uncaptured technique is used, the
         distal femur should be cut on the outside surface of the
         capture. (see bottom of this page for optional technique)
         After completing the cut, remove pins and the cutting head.                 Fig. 11
         Optional Technique: The cutting head can be used in an
         uncaptured manner, as the face of the cutting head is offset by
         4mm from the capture. This can be accomplished by rotating
         the adjustment dial on the resection guide to the +4mm
         position prior to pinning the cutting head in place, which
         would result in a 14mm distal femoral resection if using the
         capture and a 10mm resection if cutting on the outside surface
         of the capture. Alternatively, the adjustment dial on the
         resection guide can be set at “0”, the cutting head can
         be pinned through the” 0” holes, then moved to the
         +4 holes and the resection can be made on the outside
         surface of the capture. Both optional methods described
         provide a 10mm distal resection.
                                                                                     Fig. 12
Instruments
          Apply the sizer so that the flat surface of the sizer is flush
          against the resected surface of the distal femur and the feet of
          the sizer are flush against the posterior condyles. Center the
          sizer mediolaterally. After positioning the sizer, the external
          rotational setting can be verified or adjusted. Both the vertical
          and horizontal portions of the sizer provide visual cues
          relative to the AP and epicondylar axes of the femur to help
                                                                                                                     Squeeze to
          ensure that desired rotational adjustment is attained.                                                       Unlock
          While holding the guide in place and if necessary, secure the
          sizer to the femur using 33mm x 3.2mm (3.5mm hex) screws
          (Fig. 15) in one or both of the holes on the lower portion of
          the guide to help draw the sizer adjacent to the distal femur,
                                                                                              Fig. 14
          particularly in MIS situations.
          Slightly extend the knee and retract soft tissues to expose the
          anterior femoral cortex. Clear any soft tissue from the anterior
          cortex. Ensure that the leg is in less than 90° of flexion
          (70°-80°). This will decrease the tension of the patellar tendon
          to facilitate placement of the sizing boom. The position of the
          boom tip approximates the proximal position of the anterior
          flange of the femoral component. The sizing boom can be
          rotated to facilitate insertion under the soft tissue envelope.
          A palpable indication, as well as size markings on the top                          Fig. 15
          portion of the sizing boom ensures that the sizing boom
          is rotated to the correct position.
Instruments
Positioning the sizing boom tip on the “high” part of the femur by
lateralizing the location of the sizing boom tip can often lessen the
likelihood of notching the femur.
This NexGen Posterior Referencing Sizer works only with the NexGen
Posterior Referencing 4-in-1 Flex Femoral Cut Guides.
Fig. 18
Instruments
           3.2mm Drill
         00-5120-085-00
                                                                                                                           6
SECTION
           	     •	 Release collar
           	     •	 Rotate handle until “click” is heard
           Place the 4-in-1 cut guide on the femur by aligning the 2 pins
           on the back of the guide with the previously drilled positioning            Fig. 19                             3.) Release
           holes. (Fig. 20)
Impact the handle until the guide is flush with the femur.
           Place the Resection Guide through the anterior slot of the cut
           guide to ensure the desired anterior resection. (Fig. 21) If the
           “0” holes were drilled during the sizing step and there is a risk
           of unacceptable notching, use the handle to axially remove
           the cut guide.
Fig. 21
Instruments
  7
                                                                                                                        SECTION
Place the next larger-sized femoral cut guide on the femur and
recheck the anterior resection level with the Resection Guide.
Use a 1.27mm (.050 in.) thick oscillating saw blade to                          Fig. 22a & b
complete the anterior, posterior, posterior chamfer and
anterior chamfer resections. (Fig. 24) Upon completion of
the cuts, use the Multi Pin Puller or pin inserter to remove the
oblique pins. Attach the handle to the cut guide and remove
from the femur.
Fig. 23
Fig. 24
Instruments
   Do not impact the Femoral Provisional Cutting Guide Plate into                                Fig. 27
   the Femoral Provisional/Cut Guide.
Instruments
              Femoral and        CR-Flex Femoral         33mm x 3.2mm     Pin/Screw Inserter     Femoral Provisional
               Provisional        Provisional/Cut      Hex Headed Screw    00-5901-021-00        Cutting Guide Plate
           Impactor/Extractor   Guide, Size E, Right      (3.5mm hex)                              for C-D, E-F, G-H
            00-5901-026-00       00-5955-015-92         00-5901-035-33                         00-5901-099-01/02/03
  9
                                                                                                                      SECTION
        Drill the peg holes for the femoral component through the
        femoral provisional/cut guide with the NexGen 6.4mm
        Patella/Femoral Drill. (Fig. 30)
Fig. 30
Instruments
51B         EstablishFemoral
            LPS-Flex  the Tibial
                              Trialing,
                                 Platform
                                        Trochlear Recess and LPS Box Preparation
   Do not impact the Femoral Provisional Cutting Guide Plate into the
   Femoral Provisional/Cut Guide.                                                             Fig. 33
Instruments
              Femoral and      LPS-Flex Femoral      LPS-Flex Modular      33mm x 3.2mm     Pin/Screw Inserter     Femoral Provisional
               Provisional      Provisional/Cut       Box Provisional,   Hex Headed Screw    00-5901-021-00       Cutting Guide Plate for
           Impactor/Extractor Guide, Size E, Right     Size E, Right        (3.5mm hex)                                C-D, E-F, G-H
            00-5901-026-00     00-5961-015-92        00-5961-015-82       00-5901-035-33                         00-5901-099-01/02/03
 11
                                                                                                                             SECTION
If the appropriately sized LPS-Flex modular box provisional does not         Figs. 35a & b
easily seat into the provisional/cut guide perform clean up
cuts to assure adequate bone has been removed.
Do NOT impact the modular box provisional.
                                                                                                                    Insert
         Drill the peg holes for the femoral component through the
         femoral provisional/cut guide with the NexGen 6.4mm
         Patella/Femoral Drill.
         Remove the screw from the anterior flange in the femoral
         provisional/cut guide. Reattach the impactor/extractor to the
         femoral provisional/cut guide to remove from the bone.
         If necessary, place the round end of the Slaphammer
         Extractor in the extraction hole of the impactor/extractor
         to facilitate removal.                                              Fig. 36
         Also, the slaphammer can be inserted into the notch on
         medial or lateral side of the provisional/cut guide for removal.
                                                                                    Instruments
TECHNIQUE TIP	            5.J
51C
            Alternate Method for Trochlear Recess Preparation for CR-Flex
            Establish the Tibial Platform
            or LPS-Flex Provisional/Cut Guides
The Multi Pin Puller cannot be used to extract the screw. LPS-Flex
Instruments
           Captured Trochlear     33mm x 3.2mm     Pin/Screw Inserter    CR-Flex Femoral        LPS-Flex Femoral
               Cut Guide        Hex Headed Screw    00-5901-021-00        Provisional/Cut        Provisional/Cut
            00-5901-097-00         (3.5mm hex)                          Guide, Size E, Right   Guide, Size E, Right
                                 00-5901-035-33                          00-5955-015-92         00-5961-015-92
 13
                                                                                                                                 SECTION
Make sure that the bottom of the trochlear recess cut for the
LPS-Flex component has already been completed in either Step 5B
or the alternate method described on the opposite page.
         By hand, fully seat the Captured LPS-Flex Box Cut Guide into
         the appropriate LPS-Flex provisional/cut guide in the proper
         orientation. (Fig. 40)                                                            Fig. 40
         Secure the Captured LPS-Flex box cut guide though the lateral                                         LPS-Flex
         anterior flange with a 33mm x 3.2mm screw (3.5mm hex) with
         the pin/screw inserter. (Fig. 41)
                                                                                                               LPS-Flex
TECHNIQUE TIP	              5.Q
         Remove the Captured LPS-Flex box cut guide from the femoral
         provisional/cut guide.
Instruments
61A        Establish
           Resect Proximal
                     the Tibial
                            Tibia
                                Platform
                                  without Spike Arm
   The button shown in step two is used for adjusting the height of
   the captured tibial cutting guide. It can be depressed for macro-
   adjustment and rotated for micro-adjustment. One rotation equals
   1mm of adjustment.
Instruments
              Ankle Clamp           EM Distal        EM Proximal      Tibial Cut Guide,   Tibial Cut Guide,   Tibial Cut Guide,        Tibial Cut Guide,        Tibial Cut Guide,
            00-5901-070-00      Telescoping Tube   Telescoping Rod      7°, Universal          7°, Left           7°, Right                 0°, Left                0°, Right
                                00-5901-071-00     00-5901-072-00     00-5901-080-00      00-5901-077-00      00-5901-078-00           00-5901-075-00           00-5901-076-00
                                                                        Resect Proximal
                                                                                    Establish
                                                                                        Tibia without
                                                                                              the Tibial
                                                                                                       Spike
                                                                                                         Platform
                                                                                                              Arm
                                                                                                                                   61A
Align the rod with the medial third of the tibial tubercle or
just medial to the tubercle. Push the varus/valgus button
on the distal posterior portion of the EM Alignment Guide to         Fig. 45
adjust the rod mediolaterally so the guide is aligned with the
mechanical axis of the tibia. The longitudinal
axis of the rod will usually lie just medial to the mid-point
of the tibial tubercle and be centered in line with the
intercondylar eminence.                                                                                        Rotational
                                                                                                               Verification
The foot of the rod should be positioned about 5mm-10mm
medial to the midpoint between the palpable medial and
lateral malleoli.
Fig. 47
                                                                                                                                    16
SECTION
61A         Establish
            Resect Proximal
                      the Tibial
                             Tibia
                                 Platform
                                   without Spike Arm
            Insert the plate on the Tibial Depth Resection Stylus into the
            slot of the Captured Cut Guide. (Fig. 48). The 2mm tip should
            rest on the tibial condyle (Fig. 49). This positions the slot of the
            Cut Guide to remove 2mm of bone below the tip of the stylus.
            Alternatively, rest the 10mm tip of the stylus on the cartilage of         Fig. 48
            the least involved condyle (Fig. 50). This will allow the removal
            of the same amount of bone that the thinnest tibial component
                                                                                              2mm                                                         10mm
            will replace. These two points of resection will usually not                    Stylus Tip                                                  Stylus Tip
            coincide. The surgeon must determine the appropriate level
            of resection based on patient’s needs, such as: age, bone
            quality, and the type of prosthetic fixation planned.
Fig. 51
Instruments
              Ankle Clamp         EM Distal        EM Proximal     Tibial Cut Guide,   Tibial Cut Guide,   Tibial Cut Guide,   Tibial Cut Guide,   Tibial Cut Guide,
            00-5901-070-00    Telescoping Tube   Telescoping Rod        7°, Left           7°, Right         7°, Universal          0°, Left           0°, Right
                              00-5901-071-00     00-5901-072-00    00-5901-077-00      00-5901-078-00      00-5901-080-00      00-5901-075-00      00-5901-076-00
 17
                                                                                                                                                                        SECTION
                                                                                              Resect Proximal
                                                                                                          Establish
                                                                                                              Tibia without
                                                                                                                    the Tibial
                                                                                                                             Spike
                                                                                                                               Platform
                                                                                                                                    Arm
                                                                                                                                                                        61A
After cutting through the medial side and as far as possible into the
lateral side, remove the cut guide assembly. Extend the knee and
retract soft tissue on the lateral side. If necessary use an osteotome
to complete the cut.
Instruments
         Tibial Cut Guide,      Tibial Depth       Tibial Depth     Pin/Screw Inserter     3.2mm x 75mm        Alignment Adapter    Alignment Rod    Multi Pin Puller
           0°, Universal      Resection Stylus   Resection Stylus    00-5901-021-00      Trocar Tipped Drill    00-5901-086-00       with Coupler   00-5901-022-00
         00-5901-079-00           2/10mm             4/6mm                                Pin (2.5mm hex)                          00-5785-080-00
                              00-5901-082-00     00-5901-081-00                           00-5901-020-00
                                                                                                                                                                         18
SECTION
61B         Establish
            Resect Proximal
                      the Tibial
                             Tibia
                                 Platform
                                   with Spike Arm
            Depress the button on the Spike Arm Post and insert the                                      3) Insert
            EM Tibial Spike Arm. (Fig. 55) Insert the Spike Arm Post into the
            EM Proximal Telescoping Rod and stabilize the alignment guide,
            by tapping in only the longest spike on the Spike Arm into the
            central tibial plateau just anterior to the tibial spine in the
            mediolateral midline. (Fig. 56) Depress the button on the                       Fig. 55
            the Spike Arm Post and slide the Captured Cut Guide
            so that it is adjacent to the proximal anterior tibia.
Instruments
              EM Proximal      Tibial Cut Guide,   Tibial Cut Guide,   Tibial Cut Guide,   Tibial Cut Guide,    Tibial Cut Guide,      Tibial Cut Guide,     Tibial Depth
            Telescoping Rod         7°, Left           7°, Right         7°, Universal          0°, Left            0°, Right            0°, Universal     Resection Stylus
            00-5901-072-00     00-5901-077-00      00-5901-078-00      00-5901-080-00      00-5901-075-00       00-5901-076-00         00-5901-079-00          2/10mm
                                                                                                                                                           00-5901-082-00
 19
                                                                                                                                         SECTION
                                                                                            Resect Proximal
                                                                                                    Establish
                                                                                                            Tibia
                                                                                                              thewith
                                                                                                                  Tibial
                                                                                                                       Spike
                                                                                                                         Platform
                                                                                                                              Arm
                                                                                                                                         61B
4mm
Fig. 59
+4 Holes
Fig. 60
Instruments
  Tibial Depth     Pin/Screw Inserter     3.2mm x 75mm        Alignment Adapter    Alignment Rod     Multi Pin Puller     Slaphammer
Resection Stylus    00-5901-021-00      Trocar Tipped Drill    00-5901-086-00       with Coupler    00-5901-022-00          Extractor
    4/6mm                                Pin (2.5mm hex)                          00-5785-080-00                        00-5901-024-00
00-5901-081-00                           00-5901-020-00
                                                                                                                                          20
SECTION
71          Establishthe
            Prepare   thePatella
                          Tibial Platform
            Place the leg in full extension, evert the patella to at least 90°.
            Stabilize the patella, using two inverted towel clips.
            Incise the soft tissue around the patella down to the                 Fig. 61
            insertion of the quadriceps and patellar tendons using
            an electrocautery knife.
            Before making any bone cuts, determine the maximum                     Patella Size and Thickness   Patella Size and Thickness
            thickness of the patella by using the Femur Caliper to measure
                                                                                   NexGen Standard Implant      Natural-Knee® Flex Implant
            the most prominent anterior-to-posterior dimension. (Fig. 61)
                                                                                   29mm x 8.0mm                 0 (28mm) x 8.0mm
                                                                                   32mm x 8.5mm                 1 (32mm) x 8.0mm
    TECHNIQUE TIP	            7.B
                                                                                   35mm x 9.0mm                 2 (35mm) x 8.0mm
    The Femur Caliper has a tolerance of ± 0.25mm.                                 38mm x 9.5mm                 3 (38mm) x 8.0mm
                                                                                   41mm x 10.0mm
Fig. 63
Instruments
 21
                                                                                                                        SECTION
                                                                                      EstablishPrepare
                                                                                                the Tibial
                                                                                                        thePlatform
                                                                                                             Patella
                                                                                                                        71
        Use the Patella Osteotomy Guide with the stylus set for the                        1.) Depress Collar
        desired amount of resection. Depress the button on the stylus
        while twisting to set the stylus at the desired resection level
        (Fig. 64). If the patella is very worn, resect less bone.                                   2.) Rotate Collar
Assure that the stylus is referencing the most prominent point on the
patella before resecting.
        Apply the Patella Osteotomy Guide medially and laterally with      Fig. 64
        the jaws at the osteochondral juncture with the handles of the
        jig oriented toward the foot. Apply the guide with the jaws
        parallel to the dorsal surface of the patella, while positioning
        the stylus over the most prominent point on the patella.
2.) Depress
Instruments
       Patella Osteotomy
             Guide
        00-5903-010-00
                                                                                                                         22
SECTION
71          Establishthe
            Prepare   thePatella
                          Tibial Platform
    For hard/sclerotic bone it may be necessary to impact the drill guide       Fig. 68
    face to fully seat the drill guide. This is necessary to assure that
    adequate bone removal is attained during drilling to fully seat
    the implant.
Fig. 69
Instruments
                                                                                           EstablishPrepare
                                                                                                     the Tibial
                                                                                                             thePlatform
                                                                                                                  Patella
                                                                                                                            71
                                                                                          2.) Depress
TECHNIQUE TIP	             7.I
Fig. 72
Instruments
81A         Establish
            Size and Position
                      the Tibial
                               Tibial
                                 Platform
                                      Component
                                                                                                                                              Lock
   TECHNIQUE TIP	                 8.A
   Do not impact or lever the Offset Sizing Plate Handle; this instrument
   is designed for alignment purposes only. Use the alignment rod in
   the hole or slot in the sizing plate Handle to verify proper tibial plate
   varus/valgus and rotational alignment. See Appendix A for correcting
   varus/valgus resections.
Instruments
            Offset Sizing Plate    Tibial Sizing Plate  Standard All-Poly      CR Articular        CR-Flex Femoral          Femoral and
                 Handle             w/out Posterior    Patella Provisional, Surface Provisional     Provisional/Cut          Provisional
            00-5953-096-00           Tabs, Size 2-8    Size 32mm x 8.5mm      C-H 5-6, 10mm       Guide, Size E, Right   Impactor/Extractor
                                  00-5951-019-02/08 00-5971-065-32           00-5971-040-10        00-5955-015-92         00-5901-026-00
 25
                                                                                                                                       SECTION
                                                                                                Size and
                                                                                                       Establish
                                                                                                         Positionthe
                                                                                                                  Tibial
                                                                                                                     Tibial
                                                                                                                         Component
                                                                                                                            Platform
                                                                                                                                       81A
When pinning the sizing plate to the bone through the anterior angled                Fig. 76
pin holes, verify the posterior edge of the sizing plate does not
lift-off from the bone from overtightening.
         Once desired alignment has been verified with the Drop Rod,
         remove the sizing plate handle from the sizing plate.
Instruments
           33mm x 3.2mm    Pin/Screw Inserter   25mm Shorthead    Multi Pin Puller    Alignment Rod
          Hex Head Screw    00-5901-021-00        Holding Pin    00-5901-022-00        with Coupler
            (3.5mm hex)                         00-5977-056-03                       00-5785-080-00
          00-5901-035-33
                                                                                                                                        26
SECTION
81B         Establish
            Size and Position
                      the Tibial
                               Tibial
                                 Platform
                                      Component
                                                                                              Fig. 77
   TECHNIQUE TIP	                8.E
   Do not impact or lever the Offset Sizing Plate Handle; this instrument
   is designed for alignment purposes only.
Instruments
           Offset Sizing Plate    Tibial Sizing Plate  33mm x 3.2mm      Pin/Screw Inserter
                Handle             w/out Posterior    Hex Headed Screw    00-5901-021-00
           00-5953-096-00          Tabs, Sizes 2-8       (3.5mm hex)
                                 00-5951-019-02/08 00-5901-035-33
 27
                                                                                                                               SECTION
                                                                                        Size and
                                                                                               Establish
                                                                                                 Positionthe
                                                                                                          Tibial
                                                                                                             Tibial
                                                                                                                 Component
                                                                                                                    Platform
                                                                                                                               81B
Do not impact or lever the Offset Sizing Plate Handle; this instrument
is designed for alignment purposes only. Use the alignment rod in
the hole or slot in the sizing plate Handle to verify proper tibial plate
varus/valgus and rotational alignment. (Fig. 78) See Appendix A for
correcting varus/valgus resections.
                                                                              Fig. 78
         When the desired position has been attained, secure the sizing
         plate by placing a 33mm x 3.2mm screw (3.5mm hex) in one
         of the anterior holes in the sizing plate (Fig. 79) and a 25mm
         Shorthead Holding Pin on the opposite side of the sizing plate
         face. (Fig. 80) Ensure that the sizing plate remains in the proper
         position when pinning.
When pinning the sizing plate to the bone through the anterior angled
pin holes, verify the posterior edge of the sizing plate does not lift-off
from the bone from overtightening.
         Once desired alignment has been verified with the Drop Rod,
         remove the MIS Sizing Plate Handle from the sizing plate.
Fig. 80
Instruments
                                                                                                                                28
SECTION
91           Establish
             Broach  Tibia
                       the Tibial Platform
             Broach Tibia
             Place and hold the 16.7mm Drill Bushing on the Tibia Sizing
             Plate without Posterior Tabs. (Fig. 81) The Peg Hole Drill Guide
             Handle can also be attached to the drill bushing and placed
             on the sizing plate. (Fig. 82)
   Make sure that the broach handle remains flush against the sizing
   plate and in full contact with the sizing plate and that the broach
   handle does not toggle during impaction.                                                   Fig. 82
Fig. 83
Instruments
             Tibial Sizing Plate      16.7mm Drill    16.7mm Cemented       33mm x 3.2mm     Pin/Screw Inserter   25mm Shorthead    Peg Hole Drill
              w/out Posterior           Bushing      Stemmed Tibial Drill Hex Headed Screw    00-5901-021-00        Holding Pin     Guide Handle
              Tabs, Sizes 2-8       00-5901-012-00     00-5977-010-01        (3.5mm hex)                          00-5977-056-03   00-5903-060-00
            00-5951-019-02/08                                              00-5901-035-33
 29
                                                                                                                               SECTION
Keep the broach impactor as close to vertical as possible to facilitate                                3.) Release
proper broach position. The orientation of the broach handle is
important to ensure proper and complete broaching resulting in                 Fig. 84
full seating of the tibial implant on the bone.
Impact the under surface of the impaction head in the center of the
anterior portion of the collar beneath the impaction head. Maintain a
vertical impact direction in order to extract the broach straight out of the
bone and avoid disruption of the broach preparation. Vertical extraction
will also reduce stress on the instrument (Fig. 86). DO NOT extract with
mallet blows on either the medial or lateral side of the under surface
of the impaction head. DO NOT attempt to extract the broach with a
horizontal or angled blow on any side of the broach impactor handle.
Fig. 85
Fig. 86
Instruments
                                                                                                                                30
SECTION
10
 1          EstablishTrial
            Perform   the Reduction
                           Tibial Platform
Instruments
            Tibial Sizing Plate  Standard All-Poly CR Articular Surface  CR-Flex Femoral          Femoral and
             w/out Posterior    Patella Provisional,    Provisional       Provisional/Cut          Provisional
             Tabs, Sizes 2-8    Size 35mm x 9mm       C-H 5-6, 10mm     Guide, Size E, Right   Impactor/Extractor
           00-5951-019-02/08 00-5971-065-35          00-5971-040-10      00-5955-015-92         00-5901-026-00
 31
                                                                                                                     SECTION
                                                                                     Establish
                                                                                            Implant
                                                                                               the Tibial
                                                                                                     Components
                                                                                                          Platform
                                                                                                                     11
                                                                                                                     1
Implant Components
Instruments
11
1         EstablishComponents
          Implant   the Tibial Platform
          Tibial Plate	
          If a stemmed tibial base plate will be used with a stem                    1.) Unlock Collar
          extension, attach the desired stem extension to the stem                                            3.) Release
          and strike it once with a mallet. If a 10mm-14mm thick tibial
          articular surface will be used, insert the locking screw for the
          stem extension. If a stemmed tibial base plate will be used
          without a stem extension, consider the need for a taper plug.
          If a 17mm or 20mm articular surface will be used, a stem
          extension or taper plug is required. A taper plug can also be
                                                                                                             2.) Insert
          used with the 10mm-14mm tibial articular surface. If it is                            4.) Rotate
          planned to use a 14mm articular surface or if the flexion and
          extension gaps are not balanced, consider using the taper plug
          in case the final reduction reveals that it is necessary to switch
          to a 17mm or 20mm articular surface. Furthermore, if the
          articular surface should ever require revision with a 17mm
          or 20mm thick component, the taper plug is already in place          Fig. 89
          and revision of the tibial base plate may not be necessary.
          Position the tibial plate onto the tibia and use the Tibial
          Impactor to impact it until fully seated (Fig 90). Thoroughly
          remove any excess cement in a consistent manner.
                                                                               Fig. 90
Instruments
                                                                                                  Establish
                                                                                                         Implant
                                                                                                            the Tibial
                                                                                                                  Components
                                                                                                                       Platform
                                                                                                                                  11
                                                                                                                                  1
Femoral Component
With the knee in 70°-90° of flexion, place the Collateral
Retractor laterally, an Army-Navy retractor anteriorly, and a
rake retractor on the meniscal bed medially. Place a layer of
cement on the underside of the prosthesis and in the holes
drilled in the femur. Attach the Femoral and Provisional
Impactor/Extractor to the femoral component. (Fig. 91) Insert
the femoral component onto the distal femur by translating the
component laterally until the lateral peg aligns with the drill
hole in the lateral femoral condyle. Take care to avoid
scratching the implant component surfaces. Disposable,
plastic Tibial Plate Protectors may be temporarily inserted onto           Fig. 91
the Tibial Base Plate to protect the implant surfaces during
insertion of the femoral component. Remove the Tibial Plate
Protector after the femur is seated. Be sure that soft tissue is              1.) Unlock Collar
not trapped beneath the implant. Assemble the Quick Connect                                              3.) Release
Handle to the Femoral Impactor Head (Fig. 92)
Fig. 92
Fig. 93
Instruments
11
1           EstablishComponents
            Implant   the Tibial Platform
            Articular Surface
            The Articular Surface Inserter applies both downward and
            rearward forces to aid in the insertion of the articular surface
            onto the tibial base plate. Push the lever on the inserter fully
            to either side. Place the articular surface onto the tibial base
            plate, engaging the dovetails (Fig. 94) Steady the surface on
            the base plate with one hand by applying downward pressure
            near the posterior cruciate cutout. Engage the hook on the
            inserter with the mating slot in the front of the base plate
            and close the lever with your index finger. This locks the
            inserter to the tibial plate. Squeeze the handles of the inserter
            to seat the articular surface (Fig. 95). Open the lever and                   Fig. 94
            remove the inserter.
   Insert an articular surface only once. Never reinsert the same articular
   surface onto a tibial base plate.
            Patellar Component
            NexGen All-Polyethylene Patella
            With the knee in 70°-90° of flexion apply cement to the anterior
            surface and pegs of the patellar component while in a doughy
            consistency. Locate the drilled peg holes and use the Patella                 Fig. 95
            Clamp Assembly to insert and secure the patella in place.
            Fully open the jaws of the clamp and align the tooth to the
            anterior surface of the patella and the Patella Clamp Head to
            the posterior surface of the implant. (Fig. 96) Use the clamp to
            apply a significant amount of pressure to the implant to fully
            seat the implant on the patellar surface. Remove any excess
            cement in a thorough and consistent manner.
Fig. 96
Instruments
            NexGen Precoat   NexGen CR/CR-Flex    Articular Surface   NexGen Prolong       Patella Clamp    Patella Clamp
            Stemmed Tibial     Prolong® Tibial         Inserter        All-Poly Patella   00-5903-020-00        Head
                 Plate        Articular Surface   00-5977-020-00      00-5972-066-35                       00-5903-021-00
            00-5980-047-01    00-5952-040-12
 35
                                                                                                                         SECTION
                                                                                         Establish
                                                                                                Implant
                                                                                                   the Tibial
                                                                                                         Components
                                                                                                              Platform
                                                                                                                         11
                                                                                                                         1
                                                                                                                          36
SECTION
11
1         EstablishComponents
          Implant   the Tibial Platform
          4. 	 Select the Tibial Plate Wrench that matches the size of the
          	 implant to be assembled. Place the end of the wrench over
          	 the tibial plate. Ensure that the wrench is in line with the
          	 base of the tibial plate.
 37
                                                                                                                                                                           APPENDIX
                                                                                                                                                                            SECTION
                                                                                                                    Establish
                                                                                                                     Varus/Valgus
                                                                                                                              the Tibial
                                                                                                                                   RecutPlatform
                                                                                                                                         Guides
                                                                                                                                                                           A1
The fixation holes for the recut guide are at oblique angles to improve
fixation of the guide.
        Insert the alignment adapter into the recut guide. Place the
        alignment rod into the alignment adapter and verify the
        desired alignment. (Fig. 99) Remove the alignment adapter
        and alignment rods, perform resection, remove
        the trocar-tipped pins and the guide.
Fig. 98 Fig. 99
Instruments
       Alignment Adapter     Alignment Rod          2° Valgus          Tibial Cut Guide,   Tibial Cut Guide,   Tibial Cut Guide,   Tibial Cut Guide,   Tibial Cut Guide,
        00-5901-086-00        with Coupler         Recut Guide              7°, Left           7°, Right         7°, Universal          0°, Left           0°, Right
                            00-5785-080-00       00-5901-090-00        00-5901-077-00      00-5901-078-00      00-5901-080-00      00-5901-075-00      00-5901-076-00
        Tibial Cut Guide,   Pin/Screw Inserter    3.2mm x 75mm          Multi Pin Puller
          0°, Standard       00-5901-021-00        Trocar Tipped       00-5901-022-00
        00-5901-079-00                           Drill Pin (2.5 hex)
                                                 00-5901-020-00
                                                                                                                                                                             38
APPENDIX
 SECTION
    The fixation holes for the recut guide are at oblique angles to improve
    fixation of the guide.
             Insert the alignment adapter into the recut guide. Place the
             alignment rod into the alignment adapter and verify the
             desired alignment. (Fig. 101) Remove the alignment adapter
             and alignment rods, perform resection, remove the trocar-tipped
             pins and the guide.
Instruments
            Alignment Adapter     Alignment Rod           2° Varus          Tibial Cut Guide,   Tibial Cut Guide,   Tibial Cut Guide,   Tibial Cut Guide,   Tibial Cut Guide,
             00-5901-086-00        with Coupler         Recut Guide              7°, Left           7°, Right         7°, Universal          0°, Left           0°, Right
                                 00-5785-080-00       00-5901-090-01        00-5901-077-00      00-5901-078-00      00-5901-080-00      00-5901-075-00      00-5901-076-00
             Tibial Cut Guide,   Pin/Screw Inserter    3.2mm x 75mm          Multi Pin Puller
               0°, Standard       00-5901-021-00        Trocar Tipped       00-5901-022-00
             00-5901-079-00                           Drill Pin (2.5 hex)
                                                      00-5901-020-00
  39
                                                                                                                           APPENDIX
                                                                                                                            SECTION
                                                       Replacement of Femoral/Femoral
                                                                                  Establish
                                                                                      Provisional
                                                                                            the Tibial
                                                                                                  Inserter
                                                                                                       Platform
                                                                                                           Jaws
                                                                                                                           B1
         Replacement of Femoral/Femoral
         Provisional Inserter Jaws
         To replace the Femoral/Provisional Inserter Jaw on the
         Femoral and Provisional Impactor/Extractor, use a standard
         screwdriver to disengage the locking mechanism of the jaw.
         (Fig. 102). Remove the jaw.
Insert the replacement jaw into the femoral inserter (Fig. 103).
Fig. 103
Fig. 104
Instruments
 C1        Establish Femoral
           Alternate the TibialProvisional
                                Platform Insertion and Extraction
Fig. 106
Instruments
                                 42
This documentation is intended exclusively for physicians and is not intended for laypersons.
Information on the products and procedures contained in this document is of a general nature
and does not represent and does not constitute medical advice or recommendations. Because
this information does not purport to constitute any diagnostic or therapeutic statement with
regard to any individual medical case, each patient must be examined and advised individually,
and this document does not replace the need for such examination and/or advice in whole or
in part. Please refer to the package inserts for important product information, including, but not
limited to, contraindications, warnings, precautions, and adverse effects.
+H124975905002001/$110406R2D11N
97-5905-002-00 Rev. 2 1103-K20 2.5ML Printed in USA ©2010, 2011 Zimmer, Inc.