Abstract
Synovial chondromatosis is not so rare intra-articular condition secondary to synovial metaplasia, that affects the knee joint. Extra-articular synovial chondromatosis however is an extremely rare condition that usually involves the synovial sheath or bursa of the foot or hand. We present two cases of synovial chondromatosis, one intra and one extra-articular. The first case was a 25 year old lady who presented with pain, swelling and restricted range of motion of left knee and was found to have an intra-articular synovial chondromatosis which was treated successfully by joint debridement. The second case was that of a 22 year old man who presented with right knee pain and was diagnosed to have an extra-articular synovial chondromatosis of his right medial hamstring tendon sheath, excision of which resulted in complete relief of symptoms.
Highlights
Synovial chondromatosis is a rare condition in which islands of metaplastic cartilage develop within the synovium.[1]
There are only four published cases of extra-articular synovial chondromatosis in prepubescent children.[3]. It arises from the synovium of tendon sheaths and bursae.[2]
The true incidence of extra-articular synovial chondromatosis is unknown as proportion of patients will remain asymptomatic.[6]
Summary
Synovial chondromatosis is a rare condition in which islands of metaplastic cartilage develop within the synovium.[1].
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