title: Deformation of the patellofemoral joint caused by synovial hemangioma: a case report.
abstract: A 15-year-old girl with synovial hemangioma of the knee joint presented with gait pain and occasional sudden swelling for over 7 years. Plain radiographs showed an irregular joint line and a lateral shift of the patella caused by malformation of the patellar groove. Arthroscopy was performed to resect the tumor and to release the lateral patellar retinaculum. If the synovial hemangioma exists in the patellofemoral joint during the growth period, we propose that early surgical treatment is necessary to avoid the deformation of the joint.
authors.affiliation: aDepartment of Orthopaedic Surgery, Fukuoka University bDepartment of Pathology, Fukuoka University Hospital, Fukuoka cDepartment of Orthopaedic Surgery, Nihon University School of Medicine, Tokyo, Japan.
authors.forename: Akira
authors.initials: A
authors.lastname: Maeyama
authors.forename: Kazuhiko
authors.initials: K
authors.lastname: Saeki
authors.forename: Makoto
authors.initials: M
authors.lastname: Hamasaki
authors.forename: Yuki
authors.initials: Y
authors.lastname: Kato
authors.forename: Masatoshi
authors.initials: M
authors.lastname: Naito
mesh_terms: D000293:Adolescent; D001859:Bone Neoplasms / Q000150:complications* / Q000175:diagnosis / Q000601:surgery; D005260:Female; D006391:Hemangioma / Q000150:complications* / Q000175:diagnosis / Q000601:surgery; D006801:Humans; D017746:Joint Capsule; D016916:Joint Deformities, Acquired / Q000175:diagnosis / Q000209:etiology* / Q000601:surgery; D057071:Patellofemoral Joint