Three cases of pseudogout complicated with unicondylar knee arthroplasty.

Pseudogout is an uncommon complication of arthroplasty, so it is important to distinguish pseudogout from infection. We experienced three patients with the acute onset of pseudogout after unicondylar knee arthroplasty (UKA). Treatment with nonsteroidal anti-inflammatory drugs (NSAID) and cooling improved the symptoms of all three patients, and there have been no further episodes. Because there is a large area uncovered by the UKA prosthesis, it is necessary to keep in mind the possibility of pseudogout affecting the operated knee.