Upper Limb- Joints & Ligaments

Question 1

Glenohumeral Joint

• Ligaments
• Bursae
• Stabilisers of the shoulder

Answer 1

Ball & socket
Ligaments: glenohumeral, coracohumeral, transverse, capsule & dependent pouch, coracoacromial
Bursa: subdeltoid, infraspinatus, subacromial
Stabilisers at terminal ranges:
- Superior GH lig= 0* @ max adduction
- Middle GH lig= 45-60*- abduction, prevents anterior dislocation
- Ant band of inf GH lig = max abduction and external rotation
Other stabilisers/potential dislocators: latissimus dorsi, teres major, pec major, biceps

Question 2

Sternoclavicular joint

Answer 2

Modified saddle with fibrocartilage meniscus

Ligaments: anterior & capsule; costoclavicular - ant & post; interclavicular

Question 3

Acromioclavicular joint

Answer 3

Plane wth fibrocartilage meniscus

LIG: acromioclavicular, coracoclavicular- 2 trapezoid; coracoclavicular- 3 conoid

Question 4

Elbow joint

Answer 4

AKA: humero-ulnar
Hinge
LIG: Oblique cord, interosseous mem, annular quadrate, radial lateral collateral, ulnar medial collateral, fibrous capsule

Question 5

Wrist

Answer 5

LIG: ulnar collateral, radial collateral, dorsal radiocarpal, interosseous, pisometacarpal

Question 6

Fingers

Answer 6

Collateral

Deep transverse metacarpal ligs