Case report

Sports Medicine, Arthroscopy, Rehabilitation, Therapy & Technology

, 4:31

First online:

Open Access This content is freely available online to anyone, anywhere at any time.

A double patella-like condition secondary to synovial osteochondromatosis

  • Yoshiteru KajikawaAffiliated withDepartment of Orthopaedics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kawaramachi Hirokoji Email author 
  • , Yuji AraiAffiliated withDepartment of Orthopaedics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kawaramachi Hirokoji
  • , Hisatake TakamiyaAffiliated withDepartment of Orthopaedics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kawaramachi Hirokoji
  • , Tetsuo HiguchiAffiliated withDepartment of Orthopaedics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kawaramachi Hirokoji
  • , Gen MoriAffiliated withDepartment of Orthopaedics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kawaramachi Hirokoji
  • , Shinsuke MorisakiAffiliated withDepartment of Orthopaedics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kawaramachi Hirokoji
  • , Toshikazu KuboAffiliated withDepartment of Orthopaedics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kawaramachi Hirokoji

Abstract

To our knowledge, this is the first case of synovial osteochondromatosis in a patient presenting with a double patella-like condition. The true duplication of the patella, which is called double patella, is extremely rare. In our case, the operative and histopathological findings showed that the double patella-like condition was secondarily induced by synovial osteochondromatosis. Synovial osteochondromatosis should be considered as a differential diagnosis for congenital double patella.

Keywords

Osteochondromatosis Synovial osteochondromatosis Chondromatosis Double patella Knee