title: The management of acetabular malunion with traumatic arthritis by total hip arthroplasty.
abstract: OBJECTIVE
  To explore the treatment strategies and clinical effect of the acetabular malunion with traumatic arthritis by total hip arthroplasty.
  
  
  METHODS
  A retrospective analysis was conducted on 47 cases of acetabular malunion with traumatic arthritis from June 2000 to December 2009. All the patients underwent total hip arthroplasty with bone grafting or titanium cage for bone defect of the acetabulum. Harris hip scoring system was used for evaluating the functional recovery of the hip joint.
  
  
  RESULTS
  Thirty three cases had an average of 47 months follow-up. No prosthesis was loosened and the function of hip joint was improved obviously with the Harris hip scores improving from 43.5 to 87.6. However, there were one case of sciatic nerve injury and four cases of heterotopic ossification postoperatively.
  
  
  CONCLUSIONS
  Total hip arthroplasty might be an effective treatment of acetabular malunion with traumatic arthritis. Proper evaluation and reasonable reconstruction of acetabular defect as well as reasonable selection of prosthesis are essential to obtain an excellent outcome.
authors.affiliation: Qing-jiang Pang, Department of Orthopaedics Centre, Ningbo No.2 Hospital, Ningbo, 315010. China.
authors.forename: Qing-Jiang
authors.initials: QJ
authors.lastname: Pang
authors.affiliation: Xiao Yu, Department of Orthopaedics Centre, Ningbo No.2 Hospital, Ningbo, 315010. China.
authors.forename: Xiao
authors.initials: X
authors.lastname: Yu
authors.affiliation: Xian-jun Chen, Department of Orthopaedics Centre, Ningbo No.2 Hospital, Ningbo, 315010. China.
authors.forename: Xian-Jun
authors.initials: XJ
authors.lastname: Chen
authors.affiliation: Zhen-chun Yin, Department of Orthopaedics Centre, Ningbo No.2 Hospital, Ningbo, 315010. China.
authors.forename: Zhen-Chun
authors.initials: ZC
authors.lastname: Yin
authors.affiliation: Guo-zhong He, Department of Orthopaedics Centre, Ningbo No.2 Hospital, Ningbo, 315010. China.
authors.forename: Guo-Zhong
authors.initials: GZ
authors.lastname: He
keywords: Acetabular fracture; Harris scoring system; Total hip arthroplasty; Traumatic arthritis