الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
Osteonecrosis of femoral head results in collapse and secondary hip osteoarthritis. Total hip arthroplasty is one of the most successful surgical procedures in reducing hip pain and has regained popularity over the last few decades. The rapidly developing operating techniques and excellent quality of implants minimize the complexity of it and provides rapid patient recovery. Therefore, it has been the treatment of choice even in young patients with end stage hip diseases.
The longevity of the prosthesis is the main problem especially in young patients. The wear of bearing surface, osteolysis related to wear are limitations to long term survivorship of prosthesis. Cementless fixation of prostheses in THA still has the advantages of longevity and easy revision. The early results of cementless THA are superior to those of cemented THA, even with advances in cementing techniques.
In this study, under spinal anesthesia utilizing the modified Hardinge approach, Cementless total hip was performed in 18 patients. The acetabular metallic shell was anatomic and secured by two or three screws or press fit without screws, while the femoral component was press fitted. Post operative enoxaparin was used for prophylaxis against deep venous thrombosis in all cases. Partial weight bearing was allowed using axillary crutches in the first 6 weeks post operative and full weight bearing with contralateral elbow crutch started after about 6-8 weeks.
We assessed the clinical signs and symptoms using modified Harris hip score pre and post operatively. MHHS of 90 points or more was categorized as an excellent result; 80-89 points were good; 70-79 points were fair; less than 70 points were poor result.