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Challenge of the Unknowns

Unknown #3


67 year-old man with the left knee pain. The pain is exacerbated by running or heavy lifting. There are asymptomatic periods when the patient is able to engage in normal activities without problem. When aggravated, symptoms become acute and the knee becomes swollen.


Orthopedic test are negative. Laboratory work is negative, specifically there is no evidence of hyperuricemia.

"Read carefully"
The above images are the films you will examine.
To view radiographs and continue diagnosis click the first image.
After viewing radiographs click here to test your wit.


Click here to review Radiographic Findings and Differential Diagnosis


Introduction to Unknown Cases

Page 1 2 3


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