Glenohumeral Joint

Question 1

The ____________ ______ is a ball-and-socket synovial joint that produces a considerable ROM including flexion and extension, abduction and adduction, and internal and external rotation.

Answer 1

Glenohumeral joint.

Question 2

The articulating surface of the _______ _______ is approximately 1/3 the size of the articulating surface of the _________ ____. To compensate for lack of stability, a cartilaginous cuff called the ________ _____ enhances and deepens the articulating surface of the glenoid fossa.

Answer 2

glenoid cavity, humeral head, and glenoid labrum.

Question 3

What two ligament give support to the glenohumeral joint?

Answer 3

Joint capsule (Superior, Middle, and Inferior)
Coracoacromial ligament.

Question 4

What is a bursae and why is it important?

Answer 4

It’s a fluid-filled sac, that reduces friction between two moving structures.

Question 5

What are the two most important bursae in the shoulder complex?

Answer 5

Subacromial and Subdeltoid bursae.

Question 6

The SITS muscles create stability on all sides of the glenohumeral joint except what side?

Answer 6

Inferior aspect.

Question 7

What are the margins of the sits muscles and their stability in the glenohumeral joint?

Answer 7

Supraspinatus muscle provides the superior aspect.
Infraspinatus muscle provides the posterior aspect.
Teres minor provides the posterior aspect.
Subscapularis provides the anterior aspect.