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Infrapatellar Bursal Osteochondromatosis Associated with Unresolved Osgood-Schlatter DiseaseA Case Report
Kazunari Ishida, MD1; Ryosuke Kuroda, MD2; Keizo Sato, MD1; Tetsuhiro Iguchi, MD1; Minoru Doita, MD2; Masahiro Kurosaka, MD2; Tetsuji Yamamoto, MD2
1 Department of Orthopaedic Surgery, Kobe Rosai Hospital, 4-1-23 Kagoike-dori, Chuo-ku, Kobe 651-0053, Japan
2 Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan. E-mail address for R. Kuroda: kurodar@med.kobe-u.ac.jp
View Disclosures and Other Information
The authors did not receive grants or outside funding in support of their research or preparation of this manuscript. They did not receive payments or other benefits or a commitment or agreement to provide such benefits from a commercial entity. No commercial entity paid or directed, or agreed to pay or direct, any benefits to any research fund, foundation, educational institution, or other charitable or nonprofit organization with which the authors are affiliated or associated.
Investigation performed at the Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan

The Journal of Bone and Joint Surgery, Incorporated
J Bone Joint Surg Am, 2005 Dec 01;87(12):2780-2783. doi: 10.2106/JBJS.D.02921
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Osgood-Schlatter disease is caused by an avulsion of a portion of the developing ossification center of the tibial tubercle in young athletes. Approximately 10% of ossicles fail to unite with the tibial tubercle, and patients with Osgood-Schlatter disease continue to have anterior knee pain brought on by even mild activity1. Patients usually become asymptomatic after skeletal maturity, although they have a prominent mass in the anterior aspect of the proximal part of the tibia.Synovial osteochondromatosis is a benign condition that is characterized by the formation of multiple chondral or osteochondral nodules in the synovial membrane or intraarticular space. When this phenomenon occurs in the bursa around a joint, the condition is called bursal osteochondromatosis. Most cases of synovial and bursal chondromatosis develop without any antecedent major trauma; however, rare cases in which the conditions have occurred following repeat minor trauma have been reported2-6. Some authors have reported the development of bursal osteochondromatosis around an osteochondroma7-9.
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