Shoulder Movement
Shoulder Flexion – Extension
(Arm flexion – extension on the trunk)
Shoulder Flexion
(Arm flexion on the trunk)
Main muscles:
Anterior deltoid
Coracobrachialis
Shoulder Flexion
Shoulder Flexion
Accessory muscles:
▪ Middle deltoid (acromial detoid)
▪ Pectoralis major – clavicular head
(upper)
▪ Serratus anterior (Dințat Anterior)
▪ Biceps brachii
▪ Supraspinatus
▪ Trapezius
Supraspinatus
Trapezius
Shoulder extension
(Arm extension on the trunk)
Main muscles:
b)
c)
a) Posterior
Fig. 17. a) Dorsal Mare; b) deltoid
Teres major
Deltoid Posterior; c) Rotund Mare
Latissimus (Rotund mare)
dorsi
Shoulder extension
(Arm extension on the trunk)
Shoulder extension
(Arm extension on the trunk)
Main muscles:
• Latissimus dorsi
• Posterior deltoid
• Teres major
Accessory muscles:
Triceps brachii
Shoulder extension
(Arm extension on the trunk)
Accessory muscles:
Triceps brachii
Shoulder abduction – adduction
(Arm abduction – adduction on the trunk)
Shoulder abduction
(Arm abduction on the trunk)
Main muscles:
Middle deltoid
Fig. 33. Mușchiul Deltoid Mijlociu
Supraspinatus
Shoulder abduction
(Arm abduction on the trunk)
Shoulder abduction
(Arm abduction on the trunk)
Accessory muscles:
0° - 15° - Supraspinatus Biceps brachii (long head)
15° - 90° - + Deltoid
90° - 180° - + Trapezius and Serratus anterior
(for anterior rotation of the scapula)
Shoulder adduction
(Arm adduction on the trunk)
Main muscles:
b)
c)
a)
Fig. 17. a) Dorsal Mare; b) Deltoid Posterior; c) Rotund Mare
Latissimus Terres major
dorsi
Pectoralis
major
Shoulder adduction
(Arm adduction on the trunk)
Shoulder adduction
(Arm adduction on the trunk)
Accessory muscles:
• Coracobrachialis
• Subscapularis
• Teres minor (Rotund mic)
• Biceps brachii (cap lung)
• Triceps brachii (cap scurt)
• Anterior and posterior deltoid
Subscapularis
Shoulder horizontal abduction – adduction
(Arm horizontal abduction – adduction on the trunk)
Shoulder horizontal abduction
Main muscles:
Posterior
deltoid
Shoulder horizontal abduction
Posterior
deltoid
Shoulder horizontal abduction
Shoulder horizontal abduction
Accessory muscles:
• Infraspinatus
• Teres minor (Rotund mic)
Shoulder horizontal abduction
Scapula adduction:
• Middle trapezius
• Rhomboid major
Shoulder horizontal adduction
Main muscles:
Pectoralis
major
Shoulder horizontal adduction
Shoulder horizontal adduction
Shoulder horizontal adduction
Accessory muscles:
• Anterior deltoid
Shoulder external – internal rotation
(Arm external – internal rotation on the trunk)
Shoulder external – internal rotation
(Arm external – internal rotation on the trunk)
Shoulder external
(Arm external rotation on the trunk)
Main muscles:
• Infraspinatus
• Teres minor
Accessory muscles:
• Posterior deltoid
Shoulder external rotation
(Arm external rotation on the trunk)
Shoulder external rotation
(Arm external rotation on the trunk)
Shoulder internal rotation
(Arm internal rotation on the trunk)
Main muscles:
• Subscapularis
• Pectoralis major
• Latissimus Dorsi
• Teres major
Accessory muscles:
• Anterior deltoid
Shoulder internal rotation
(Arm internal rotation on the trunk)
Shoulder internal rotation
(Arm internal rotation on the trunk)
Shoulder retraction – protraction
(Posterior - anterior projection of the shoulder)
(Shoulder retroduction – anteduction)
Shoulder retraction
Accessory muscles:
Main muscles: • Latissimus Dorsi
• Trapezius • Rhomboid minor
• Rhomboid major
Shoulder protraction
Main muscles: Accessory muscles:
• Pectoralis minor
• Serratus Anterior • Levator scapulae
(Dințat anterior)
Shoulder retraction – protraction
Shoulder depression – elevation
Shoulder depression
Main muscles: Accessory muscles:
• Pectoralis major
• Trapez – fibre inferioare • Pectoralis minor
• Latissimus Dorsi
Shoulder elevation
Main muscles:
• Trapezius – ascending fibres
Accessory muscles:
• Levator Scapulae • Rhomboid major
• Rhomboid minor
• Serratus anterior
Shoulder depression – elevation
