Anatomy (Shoulder, Joints)

Question 1

AC Shoulder Dislocation vs. Separation

Answer 1

AC Dislocations when AC tendon tears (acromion more prominent, clavicle may move more superior)
AC dislocations are more serious when coracoclavicular tendons (stabilizing) also tear = shoulder separation
Shoulder separates from clavicle and falls d/t weight

Question 2

What is involved with subacromial bursitis?

Answer 2

Subacromial bursa (between supraspinatus tendon and acromion) becomes inflamed and tender d/t calcifications and inflammation of supraspinatus tendon 
Painful on abduction (painful arc syndrome)

Question 3

Glenohumeral ligaments

Answer 3

(3) Radiate from supraglenoid tubercle of scapular to anatomical neck of humerus

Question 4

Coracohumeral ligament

Answer 4

From corocoid process to humerus

Question 5

Transverse humeral ligament

Answer 5

from greater to lesser tubercle of the humerus - holds long head of biceps in place (in intertubercular groove)

Question 6

Coracoacromial ligament

Answer 6

Corocoid process to acromion of scapula - provides resistance to upward force of humerus

Question 7

Glenoid labrum

Answer 7

Lip of cartilage that slightly deepens glenoid fossa

Question 8

Subacromial bursa

Answer 8

between supraspinatus tendon and acromion

Question 9

Most common muscle torn in rotator cuff injuries

Answer 9

Supraspinatus

Question 10

Most common nerve injured in shoulder dislocation and clinical manifestation?

Answer 10

Axillary nerve - deltoid unnerved - difficulty abducting to or above horizontal

Question 11

Frozen Shoulder/Adhesive capsulitis of GH joint

Answer 11

Adhesive fibrosis/scarring between inflamed joint capsule of GH joint, rotator cuff, subacromial bursa and deltoid
Extend arm and rotate to abduct –> pressure on AC joint