Glenohumoral Flashcards
1
Q
Bones of the shoulder joint
A
2
Q
Parts of glenohumeral joint (GH)
A
Spherical head of humerus Convex
Small, shallow glenoid fossa of scapula Concave
3
Q
Type of joint GH
A
ball socket
4
Q
Degrees of freedom for GH
A
3 (three)
5
Q
Osteokinematics of GH
A
F/T/S and scaption
6
Q
GH ROM
A
Abduction / Adduction 120°/none Internal/External Rot. 70-90°/70-90° Horizontal Ab / Adduction 45°/135° Flexion / Extension 120°/50° Scaption
7
Q
GH joint stability
A
Injured frequently due to anatomic design
glenoid fossa small shallow
8
Q
Reasons GH is injured alot
A
shallow fossa lax ligaments loose joint capsule no strength/endurance muscles labrum depends fossa
9
Q
Why are the ligaments lax in the GH joint
A
allow for shoulder movement
10
Q
Superior muscle reinforcements
A
Supraspinatus & long head of biceps
11
Q
Inferior muscle reinforcements
A
Long head of triceps
12
Q
anterior muscle reinforcements
A
Subscapularis, pectoralis major, & teres major
13
Q
Posterior muscle reinforcements
A
Infraspinatus & teres minor
14
Q
Look at slide 7 to see musculature
A
15
Q
Joint stability GH
A
Dynamic
