A college baseball player has seen his season cut short by a rotator cuff injury. Rotator cuff injuries are frequent because of:
A) The inherent instability of the shoulder
B) The absence of ligaments at the glenohumeral joint
C) The vulnerability of the shoulder menisci
D) The large mass of the humeral head
Ans: A
Feedback:
The complexity and flexibility of the shoulder also mean that it is one of the more unstable joints. This makes it extremely vulnerable to injuries, including sprains, dislocations, and degenerative processes such as rotator cuff disorders. The glenohumeral joint contains ligaments, although menisci do not exist in the shoulder. The anatomy of the humerus does not account for the weakness of the joint.
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