Ligaments of shoulder

Question 1

Sternoclavicular joint

Answer 1

Costoclavicular ligament- (up/med movements sternal end)

Ant/Post sternoclavicular ligament- (up/lat/downward displacement)

Interclavicular ligament- (lateral displacement)

Question 2

Sternoclavicular joint: Innervation

Answer 2

Branches medial (ant) supraclavicular nerve and nerve to subclavius

Question 3

Acromioclavicular joint: Ligaments

Answer 3

Coracoclavicular ligament

Conoid ligament (med/post coracoid) forward

Trapezoid ligament (lat/ant) backward

Acromioclavicular ligament

Coracoacromial ligament

Question 4

Shoulder seperation

Answer 4

AC seperation/dislocation

Severe= tear coracoclavicular

Blunt force to tip shoulder/acromion drive infer/med (shearing)

Question 5

Acromioclavicular joint: Innervation

Answer 5

Branches suprascapular, pectoral, axillary nerves

Question 6

Glenohumeral joint: Ligaments

Answer 6

Coracohumeral ligament

Transverse Humeral ligament- help prevent bowstringing of biceps brachii on flexion

Sup/Mid/Inf Glenohumeral ligament

Fibrous capule thickened anteriorly- pleats when ext rotate and up/down rotate

Question 7

Shoulder dislocation

Answer 7

Sprain of ligaments around glenohumeral joint

Usually anterior dislocation

Abduction and external rotation of arm