Thursday, August 20, 2015

Shoulder arthritis - a vicious circle

The early manifestations of glenohumeral arthritis are a loss of external rotation and posterior displacement of the head on the glenoid. These factors combine to load the posterior glenoid leading to its progressive wear. This wear, in turn, leads to less external rotation, with more obligate posterior translation when the anterior capsule becomes tight and more posterior wear.

This is nicely shown in the figure above copyrighted by Steve Lippitt.


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