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Synovial Osteochondromatosis of the Knee in Childhood. Case Report
Masashi TSUCHIDA
※1
Shin KATO
※1
Soushi ASAI
※1
Noriyuki NAKADA
※1
Hiroshi TAKAGI
※1
Takashi ATSUMI
※1
※1 Department of Orthopaedic Surgery, Showa University Fujigaoka Hospital
We report a rare case of synovial osteochondromatosis of the knee in childhood that developed after an injury. An 11-year-old girl experienced left knee pain after falling from a vaulting horse. X-ray films and CT scans revealed calcified bodies in the posterolateral part of the left knee. During arthroscopic surgery, 6 loose bodies were detected immediately medial to the popliteal tendon and under the lateral meniscus. No clear evidence of synovial inflammation was found. A diagnosis of synovial osteochondromatosis was made as a result of histological examination of the loose bodies. The patient has been followed up for 3 years, and she is symptom-free with no radiological evidence of recurrence.
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