title: Original methods to move femoral head medially and caudally after rotational acetabular osteotomy: especially to use ceramic spacer.
abstract: The operative procedures chosen to treat arthrosis in patients with severe acetabular dysplasia vary among orthopaedic surgeons, particularly in younger patients. We operated on 450 hips with acetabular dysplasia by using the rotational acetabular osteotomy (RAO) method of Ninomiya and Tagawa by Ninomiya (Clin Orthop 247:127-137, 1989). In this report, we describe our technique of performing RAO with hydroxyapatite tricalcium phosphate-composite (HAP-TCP) blocks to achieve good acetabular coverage and the results of this procedure in 16 hips with severe dysplasia, including nine with advanced arthrosis. Adequate coverage of the osteotomized acetabulum was maintained and symptoms, especially pain, showed marked improvement at the latest follow up.
authors.affiliation: Department of Orthopaedic Surgery, Juntendo University School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo 1138421, Japan. nozawa@med.juntendo.ac.jp
authors.forename: Masahiko
authors.initials: M
authors.lastname: Nozawa
authors.forename: Katsuo
authors.initials: K
authors.lastname: Shitoto
authors.forename: Keiji
authors.initials: K
authors.lastname: Mastuda
authors.forename: Katuhiko
authors.initials: K
authors.lastname: Maezawa
authors.forename: Seiki
authors.initials: S
authors.lastname: Ogawa
authors.forename: Takahito
authors.initials: T
authors.lastname: Yuasa
authors.forename: Kentaro
authors.initials: K
authors.lastname: Aritomi
authors.forename: Hisashi
authors.initials: H
authors.lastname: Kurosawa
mesh_terms: D000077:Acetabulum / Q000601:surgery*; D000328:Adult; D002130:Calcium Phosphates; D005260:Female; D006618:Hip Dislocation, Congenital / Q000601:surgery*; D006801:Humans; D006882:Hydroxyapatites; D008297:Male; D019637:Orthopedic Procedures / Q000379:methods; D010027:Osteotomy; D019736:Prostheses and Implants; D012399:Rotation
chemical_list: D002130:Calcium Phosphates; D006882:Hydroxyapatites; C094280:hydroxyapatite-tricalciumphosphate composite