Résumé | Because of changing life style, aging population, and increasing levels of health care, the demand of total hip replacement has become a regular orthopaedic procedure that has increased in Canada by about 19.3% from 1995 to 2000. For the cemented total hip, the surgeon uses bone cement for the fixation of the stem in the reamed medulary cavity. For the cementless total hip, with a textured or beaded and perhaps hydroxyapatite coated surface, the surgeon inserts the stem directly into the reamed medulary cavity prepared along the centre of the femur. Anatomic variations in the shape of femurs in general or as a result of disease such as osteoarthritis, demand more challenges to maintain adequate fixation. We are interested in evaluating the reliability and comparing various hip stem materials and coatings used for hip stems. |
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