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Synovium, on the Rocks

Author: Vincent Giron, DO
Peer-Reviewer: Derek Hatfield, MD
Final Editor: Brandon Godfrey, MD, Will Denq, MD, CAQ-SM

A 45-year-old male presents with left knee pain and swelling that has been progressively worsening over the last 6 months. He has limited ROM, crepitus, and large joint effusion on exam. Denies recent injury or history of surgery. He was told he had “too many bones in his knee” years ago when he had an x-ray of his knees after a car accident.

 

Image 1. Plain radiograph of the left knee. Case courtesy of Talal F M Abdullah, Radiopaedia.org, rID: 57998

 

References

[1] Synovial Chondromatosis - OrthoInfo - AAOS. www.orthoinfo.org. https://orthoinfo.aaos.org/en/diseases--conditions/synovial-chondromatosis

[2] Gaillard F, Osteochondromatosis. Case study, Radiopaedia.org (Accessed on 11 May 2023) https://doi.org/10.53347/rID-5651

[3] Shpitzer T, Ganel A, Engelberg S. Surgery for synovial chondromatosis. 26 cases followed up for 6 years. Acta Orthop Scand. 1990;61(6):567-569. doi:10.3109/17453679008993585

[4] Yothakol N, Charuvanij S, Siriwanarangsun P, Lertwanich P, Muangsomboon S, Sukharomana M. Synovial osteochondromatosis mimicking juvenile idiopathic arthritis in an adolescent: a case-based review. Clin Rheumatol. 2022;41(8):2571-2580. doi:10.1007/s10067-022-06224-w