Friday, September 6, 2013

Post traumatic arthritis of the shoulder, 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 post traumatic arthritis.

The upper view, the AP shows collapse of the humeral head, osteophyte formation, sclerosis, screws and suture anchors.

The standardized axillary view reveals much more of the pathology: a convex glenoid, a concave humeral head, posterior osteophytes which may block external rotation at surgery, as well as the hardware.

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