Subluxation

Question 1

What muscles prevent subluxation?

Answer 1

Rotator cuff muscles: 
subscapularis
infraspinatus 
supraspinatus 
teres minor

Question 2

What happens in subluxation?

Answer 2

In a subluxation, the humeral head slips out of the glenoid cavity

Question 3

What ligaments support it?

Answer 3

glenohumeral, coracohumeral, coracoacromial and the acromiohumeral ligaments.

Question 4

Sling evidence

Answer 4

A Cochrane Review in 2009 concluded that there is insufficient evidence to conclude whether supportive devices are of benefit.

Question 5

FES

Answer 5

In a Cochrane Review Functional Electrical Stimulation was found to bring about improvement in pain-free range of passive humeral lateral rotation and to reduce the severity of glenohumeral subluxation; however there was no significant effect on upper limb motor recovery.

Question 6

Supraspinatus

Answer 6

Supraspinatus fossa

greater tubercle

Question 7

Subscapularis

Answer 7

sub scapular fossa

lesser tubercle of the humerus

Question 8

Infraspinatus

Answer 8

infraspinatus fossa

lesser tubercle of the humerus

Question 9

Teres minor

Answer 9

Upper 2/3 of the lateral margin of the scapular

greater tubercle of the humerus