Normal overlap of humerus and glenoid - diagram

Case contributed by A.Prof Frank Gaillard

Case Discussion

On the normal AP x-ray of the shoulder, there is a normal lenticular region of overlap between the humerus and the glenoid. Loss of this is one of the signs of a posterior shoulder dislocation and is known by the cumbersome name of the loss of normal half moon overlap sign.

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Case information

rID: 12259
Case created: 4th Nov 2010
Last edited: 1st Sep 2015
Inclusion in quiz mode: Excluded

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