Scapular and Deltoid region

Question 1

What are the movements of the parts of the deltoid

Answer 1

anterior fibers-medial rotation and flexion of arm
middle fibers-abduction past 15 degrees
posterior fibers-lateral rotation and extension of arm

Question 2

What are the boundaries of the quadrangular space?

Answer 2

superior-lateral border of scapula
inferior-long and lateral heads of triceps
medial-teres major
lateral-surgical head of humerus

Question 3

What are the contents of the quadrangular space?

Answer 3

axillary n and posterior circumflex humeral a.

Question 4

What is the most commonly injured rotator cuff muscle? how would you test?

Answer 4

supraspinatus, adduction test, empty soda can test

Question 5

Why is the supraspinatus prone to injury in old people?

Answer 5

if you have degenerative tendonitis of the rotator cuff or any sort of atrophy its more likely to rupture