Chondrosarcoma Arising in Synovial Chondromatosis of the Hip: A Case Report.

CASE

Synovial chondromatosis (SC) is a rare condition involving the proliferation of cartilage within the synovial membrane secondary to subsynovial connective tissue metaplasia. Malignant transformation to chondrosarcoma is rare. We cite a case of SC of the hip refractory to arthroscopic debridement, found to have secondary chondrosarcoma on aborted total hip arthroplasty, in which curative treatment was ultimately obtained with external hemipelvectomy.

CONCLUSION

SC has the potential to undergo malignant transformation to chondrosarcoma. The consequences of not recognizing such transformation can significantly impact patient outcomes and limit options for local control surgery and limb salvage.