Sauerland: Pre-lab 2

Question 1

What is unique about the coracoacromial ligament?

Answer 1

coracoacromial ligament is attached to two points on the SAME bone

Question 2

Two causes of rotator cuff injury?

Answer 2

tendinitis (due to overuse)

bursitis (subacromial bursa becomes irritated and inflammed)

Question 3

Risk factors for rotator cuff injury?

Answer 3

age (over 40)
athlete
construction workers
poor posture and weak shoulder muscle

Question 4

What can happen when tendons become entrapped under the acromion?

Answer 4

compression
injury
rotator cuff tendonitis

Question 5

What lies beneath the deltoid, but superior to supraspinatus tendon? Which portion lies under the coracoacromial ligament?

Answer 5

subdeltoid and subacromial bursa; subacromial underneath these tendons

Question 6

What can happen to the bursa of the shoulder if there is overuse?

Answer 6

attrition of supraspinatus tendon –> thinning can lead to rupture of subacromial bursa causing fluid to empty into the joint cavity –> calcifications may occur and calcify the tendon

Question 7

What happens if there is damage to the long thoracic nerve?

Answer 7

impairs function of serratus anterior; the muscle can no longer protract the scapula or abduct the arm completely

Question 8

What happens to the scapula when a patient with paralysis of the serratus anterior is asked to push with both hands against a wall?

Answer 8

the medial border of the scapula on the affected side becomes prominent and protrudes –> winged scapula

Question 9

Why is the long thoracic nerve easily injured?

Answer 9

it has a superficial and vertical course on the chest wall

Question 10

What are two major veins that move centrally from the hand? Which runs laterally and moves higher up? Which runs more medially?

Answer 10

basilic vein

cephalic vein; cephalic; basilic

Question 11

Between which muscles does the cephalic vein lie?

Answer 11

deltoid

pec major

Question 12

What does the cephalic vein pass through? What vein does it then empty into?

Answer 12

the investing fascia of pectoralis major and minor (medial to coricoid process); axillary vein

Question 13

What are the small lymph nodes of the elbow? Does all lymph from the hand pass through these nodes?

Answer 13

cubital nodes; NO!

Question 14

What are the three lymph nodes along the axillary vein?

Answer 14

lateral axillary –> central axillary –> apical axillary

Question 15

If there is an infection to the thumb and midpalmar space, and there is no enlargement of the cubital nodes, what other node might be affected?

Answer 15

axillary nodes