41-year-old male that in the past decade had suffered 2-3 times a year from bilateral knee pain which resolved spontaneously. Last year he had episodes of thumb pain that had lasted for several weeks and had affected grasp movements. The patient had responded to NSAID treatment for 2 weeks. MRI of the right knee showed Mild endoarticular effusion in the sub-quadriceps recess, chondropathy of the femoropatellar joint and lesion of the medial meniscus.