Wednesday, March 21, 2018

Unusual case of shoulder arthritis - the answer to yesterday's question

A 50 year old patient came in with right shoulder pain and a history of having lost 6 inches in height over the last several years. Here are the x-rays of the shoulder

And here is a lateral of the spine.

At the time of shoulder arthroplasty, the humeral head looked like this

Hint: patient's urine turns black

What is the diagnosis?

Answer: Alkaptonuria/ochronosis
see this link

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