Question

while evaluating a patient for right shoulder pain, you ask him to raise his arm overhead as you look for any signs of pain or reduced rom. which of the following occurs at the right sternoclavicular joint as the patient raises his arm to 180 degrees of abduction?
a) inferior roll, superior glide
b) superior roll, inferior glide
c) superior roll, superior glide
d) inferior roll, inferior glide

Explanation:

When a patient raises the arm to 180 degrees of abduction, at the sternoclavicular joint, the clavicle moves. The roll - glide mechanism in synovial joints (which the sternoclavicular joint is) follows the concave - convex rule. The sternal end of the clavicle (which is part of the sternoclavicular joint) moves in a way that as the arm is abducted (elevated), the clavicle rolls superiorly (due to the movement requirements for full abduction) and glides inferiorly (to maintain joint congruence).

Answer:

B. Superior roll, inferior glide