SHOULDER-MOVEMENT

SUMMARY

1. Abduction (C5): supraspinatus (first 15 degrees), deltoid (up to 90 degrees), trapezius & serratus anterior (beyond 90 degrees) 2. Adduction (C6, 7): pectoralis major, latissimus dorsi, teres major

3. Flexion (C5): deltoid, pectoralis major, biceps, corachobrachialis

4. Extension (C6, 7): latissimus dorsi, deltoid, teres major

5. Internal rotation (C6, 7): subscapularis, pectoralis major, teres major, deltoid

6. External rotation (C5): infraspinatus, teres minor, deltoid

Reference(s)

R.M.H McMinn (1998). Last’s anatomy: regional and applied. Edinburgh: Churchill Livingstone.
Gray, H., Carter, H.V. and Davidson, G. (2017). Gray’s anatomy. London: Arcturus.