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ORIGINAL ARTICLE
Year : 2012  |  Volume : 46  |  Issue : 3  |  Page : 297-303

Total hip arthroplasty for failed aseptic Austin Moore prosthesis


Department of Orthopaedics, Seth GS Medical College and KEM Hospital, Parel, Mumbai, India

Correspondence Address:
Ashish Suryawanshi
Department of Orthopaedics, 6th Floor, MSB, KEM Hospital, Parel, Mumbai 400 012
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0019-5413.96387

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Background: Though Austin Moore (AM) replacement prosthesis has fairly good short term results for intracapsular femoral neck fractures in the elderly, it still is a compromised option and has a high failure rate in the long run. The objective of the present retrospective study is to analyze the functional outcome, assess survivorship of revision total hip arthroplasty (THA) at mid to long term followup, and evaluate intraoperative difficulties faced during conversion of failed aseptic AM prosthesis to cemented THA. Materials and Methods: Eighty-nine cemented THA surgeries for failed AM prosthesis were performed between 1986 and 2005. AM failures were classified into seven groups on the basis of mode of failure. Infected failures were excluded from the study. There were 35 men and 54 women in the study group. The mean age was 68 years (range 57-91 years). Mean followup was 8 years (range 5-13 years). Results: Average Harris Hip Score improved from 65 preoperatively (range 42-73) to 87 (range 76-90) at 1 year postoperatively and to 86 (range 75-89) at the last followup. The overall complication rate was 4.5%. Conclusion: Conversion THA is an excellent treatment strategy for symptomatic failed AM hemiarthroplasty in terms of pain relief and restoration of function and mobility as near as possible to the preinjury level. Also, hemiarthroplasty should not be used in physically active patients, even in elderly individuals. Careful patient selection for hemiarthroplasty versus THA is vital and may decrease the incidence of complications and ameliorate the outcomes in the treatment of intracapsular femoral neck fractures.


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