title: A Case of Legg-Calvé-Perthes Disease due to Transient Synovitis of the Hip.
abstract: Transient synovitis (TS) of the hip develops spontaneously in childhood; it usually has a good prognosis and is a self-limiting disease. However, its pathology is not well known. We describe a case of Legg-Calvé-Perthes disease (LCPD) that seemingly developed due to TS. Even if TS is diagnosed on the basis of the patient's medical history and imaging findings, physicians should consider the possibility of LCPD and perform a careful observation if joint effusion continues and/or a symptom does not improve within 4 weeks.
authors.affiliation: Department of Orthopedic Surgery, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku Ward, Tokyo 162-8666, Japan.
authors.forename: Tadahiko
authors.identifier: 0000-0002-6834-6337
authors.initials: T
authors.lastname: Ohtsuru
authors.affiliation: Department of Orthopedic Surgery, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku Ward, Tokyo 162-8666, Japan.
authors.forename: Yasuaki
authors.initials: Y
authors.lastname: Murata
authors.affiliation: Department of Orthopedic Surgery, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku Ward, Tokyo 162-8666, Japan.
authors.forename: Yuji
authors.initials: Y
authors.lastname: Morita
authors.affiliation: Department of Orthopedic Surgery, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku Ward, Tokyo 162-8666, Japan.
authors.forename: Yutaro
authors.initials: Y
authors.lastname: Munakata
authors.affiliation: Department of Orthopedic Surgery, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku Ward, Tokyo 162-8666, Japan.
authors.forename: Yoshiharu
authors.initials: Y
authors.lastname: Kato