title: Rotational acetabular osteotomy through an Ollier lateral U approach for early-stage osteoarthritis secondary to acetabular dysplasia.
abstract: OBJECTIVE
  To explore the surgical technique and mid-term results of rotational acetabular osteotomy for early -stage osteoarthritis secondary to acetabular dysplasia.
  
  
  METHODS
  Rotational acetabular osteotomies were performed on 14 hips of 12 patients from May 2000 to May 2006 and the patients followed up. All patients were female and their average age was 28.9 years (range, 13-46 years) at the time of surgery. The mean duration of clinical and roentgenographic follow-up was 6.0 years (range, 3.1-9.1 years). The lateral center-edge (CE) angle, acetabular roof angle and head lateralization index were measured on radiographs taken preoperatively, postoperatively and at the time of final follow-up. Clinical follow-up included use of the Harris hip score. The acetabular osteotomies were performed through an Ollier lateral U transtrochanteric approach and postoperative traction and cast immobilization were not used.
  
  
  RESULTS
  All patients had satisfactory pain relief. The mean preoperative Harris score was 72 points; this had improved to a mean of 91 points at the time of last follow-up (P < 0.05). The mean CE angle improved from 0.9° preoperatively to 27° postoperatively (P < 0.05), the mean acetabular roof angle from 29° to 5° (P < 0.05) and the mean head lateralization index from 0.68 to 0.65. Solid bone-to-bone healing of the osteotomy sites and great trochanters occurred in all patients.
  
  
  CONCLUSIONS
  Rotational acetabular osteotomy through an Ollier lateral U approach, which provides wide exposure and technical ease, for early-stage osteoarthritis secondary to acetabular dysplasia can relieve pain and delay the appearance or reduce the severity of osteoarthritis. Satisfactory mid-term results can be obtained.
authors: Center for Osteonecrosis and Joint Preserving and Reconstruction, Department of Orthopaedic Surgery, China-Japan Friendship Hospital, Beijing, China. sun887@163.com
authors: Wei
authors: W
authors: Sun
authors: Zhen-cai
authors: ZC
authors: Shi
authors: Zi-rong
authors: ZR
authors: Li
authors: Yu-run
authors: YR
authors: Yang
authors: Bai-liang
authors: BL
authors: Wang
authors: Wan-shou
authors: WS
authors: Guo
mesh_terms: D000077:Acetabulum / Q000002:abnormalities* / Q000000981:diagnostic imaging / Q000601:surgery*; D000293:Adolescent; D000328:Adult; D005260:Female; D005500:Follow-Up Studies; D006618:Hip Dislocation, Congenital / Q000150:complications / Q000000981:diagnostic imaging / Q000601:surgery*; D006801:Humans; D008875:Middle Aged; D015207:Osteoarthritis, Hip / Q000150:complications / Q000000981:diagnostic imaging / Q000601:surgery*; D010027:Osteotomy / Q000379:methods*; D010146:Pain / Q000209:etiology / Q000601:surgery; D010147:Pain Measurement; D011859:Radiography; D016896:Treatment Outcome; D055815:Young Adult