title: Periacetabular osteotomy reduces the dynamic instability of dysplastic hips.
abstract: We compared the dynamic instability of 25 dysplastic hips in 25 patients using triaxial accelerometry before and one year after periacetabular osteotomy. We also evaluated the hips clinically using the Harris hip score and assessed acetabular orientation by radiography before surgery and after one year. The mean overall magnitude of acceleration was significantly reduced from 2.30 m/s(2) (sd 0.57) before operation to 1.55 m/s(2) (sd 0.31) afterwards. The mean Harris hip score improved from 78.08 (47 to 96) to 95.36 points (88 to 100). The radiographic parameters all showed significant improvements. This study suggests that periacetabular osteotomy provides pain relief, improves acetabular cover and reduces the dynamic instability in patients with dysplastic hips.
authors.affiliation: Department of Orthopaedic Surgery, School of Medicine, Fukuoka University, 7-45-1 Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan. akira.maeyama0713@joy.ocn.ne.jp
authors.forename: A
authors.initials: A
authors.lastname: Maeyama
authors.forename: M
authors.initials: M
authors.lastname: Naito
authors.forename: S
authors.initials: S
authors.lastname: Moriyama
authors.forename: I
authors.initials: I
authors.lastname: Yoshimura
mesh_terms: D000054:Acceleration; D000077:Acetabulum / Q000000981:diagnostic imaging / Q000601:surgery*; D000293:Adolescent; D000328:Adult; D005260:Female; D006618:Hip Dislocation, Congenital / Q000150:complications / Q000601:surgery*; D006621:Hip Joint / Q000000981:diagnostic imaging; D006801:Humans; D007593:Joint Instability / Q000175:diagnosis / Q000209:etiology / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D015207:Osteoarthritis, Hip / Q000000981:diagnostic imaging / Q000209:etiology; D010027:Osteotomy / Q000379:methods*; D011859:Radiography; D016896:Treatment Outcome; D055815:Young Adult