الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
This is prospective study for evaluation of the clinical and radiological results of metal on metal THR in patients with degenerative hip disease. The study was designed to primary assess functional outcome, early complications and not the longevity of the reconstruction. This study was carried on in Arthroplasty unit Mansoura University Hospital, Egypt in period from November 2007 till January 2010. The patients were identified from Arthroplasty clinic, Mansoura university hospital according to inclusion criteria which include any patients with degenerative hip disease other than pyogenic infection. The follow up of the cases ranged from 33 months to 60 months. All patients were evaluated postoperatively at six weeks, 3 months, 6 months ,1 year postoperatively, and then every one year thereafter. The result was assessed clinically using Harris hip score and found that more than 84% had excellent to good score with 6.7% poor score. Conclusion: The hard bearing metal on metal total hip replacement has excellent short and medium term results, The innovation large head diameter offers excellent results as regard range of motion and decreases dislocation rate but The biologic concerns resulting from prolonged exposure to elevated metal ions needs further follow up and longer assessment.