Glenohumeral Joint Movement

Question 1

GHJ Extension

Answer 1

1) Posterior Deltoid
2) Teres Major
3) Latissimus Dorsi
4) Triceps Brachii (long head)

Question 2

GHJ Abduction

Answer 2

1) Supraspinatus
2) Mid Deltoid with stabilization provided by anterior and posterior fibers
3) Biceps Brachii (humerus lateral rotated)

Question 3

GHJ Adduction

Answer 3

1) Pec Major
2) Teres Major
3) Lats
4) Triceps Brachii (Long head)
5) Biceps Brachii (short head)
6) Coracobrachialis

Question 4

GHJ External Rotators

Answer 4

1) Infraspinatus
2) Teres Minor
3) Posterior Fibers of Deltoid

Question 5

GHJ Internal Rotators

Answer 5

1) Clavicular portion of pec major
2) Teres Major
3) Subscapularis
4) Lats
5) Anterior fibers of deltoid when in supine