Friday, September 6, 2013

Capsulorrhaphy arthropathy, x-ray appearance

As we've emphasized before (see here), two plain x-rays are necessary and sufficient to make most diagnoses of shoulder arthritis.

Here is an anteroposterior (AP) and an axillary view typical of shoulders with arthritis after prior instability repair, capsulorrhaphy arthropathy.

The upper view, the AP shows the screw from a Latarjet coracoid transfer to the anterior glenoid along with severe secondary arthritis.

The standardized axillary view reveals much more of the pathology: the screw was placed so that it contacted the humeral head, producing a substantial erosion of the joint surface and forcing the head backwards.

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