Muscles acting at shoulder joint
arm flexion
arm extension
- latissimus dorsi (thoracodorsal nerve)
- teres major (lower subscapular nerve)
- triceps brachii
arm abduction
- supraspinatus - Rotator cuff muscles (Upper suprascapular nerve)
- Deltoid (axillary nerve)
arm adduction
- Pectoralis major (medial and lateral pectoral nerve)
- latissimus dorsi (thoracodorsal nerve)
medial rotation
- pectoralis major (medial and lateral pectoral nerve)
- teres major (lower subscapular nerve)
- latissimus dorsi (thoracodorsal nerve)
- subscapularis (subscapular nerve)
lateral rotation
- infraspinatus (suprascapular)
- teres minor (axillary nerve)