Largely through the pioneering advances made by John Charnley,' total joint replacements with man-made metal and plastic materials have revolutionized the surgical treatment of millions of patients with end-stage hip and knee arthritis for the past 30 years. Approximately 500,000 total hip and knee
Clinical problems in total hip replacements
β Scribed by Hirsch, Carl
- Publisher
- John Wiley and Sons
- Year
- 1974
- Tongue
- English
- Weight
- 1015 KB
- Volume
- 8
- Category
- Article
- ISSN
- 0021-9304
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β¦ Synopsis
Abstract
Total hip replacements are based on a long chain of efforts of partial exchange of joint compartments. Inplants of material of both biological and nonbiological origin have been applied over the past 50 years. SmithβPedersen, Judet, Moore, and Thompson are names to be remembered. It was primarily from the idea of firm fixation and low friction between the joint surfaces that today's constructions emerged. Immediate superior clinical results encouraged a strong trend towards hipβarthroplasties. The orthopedic surgeon can now choose amongst several prosthetic designs, the most common being metal to metal or plastics with or without bone cement. But, after ten years a number of threatening problems have become evident, calling for critical analysis of total joint replacements. Biomechanical, chemical, and morphological disturbances, both in the early and late phases, show that the body has difficulties in tolerating the artificial joint. This survery presents some of the most obvious risks and failures in total hip replacements.
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Two hundred and twelve total hip replacements performed in one clinic over 1 year were reviewed. The mean operative time was 89 min and mean total blood loss 1090 ml. Homologous blood was administered to 74% of the patients. Blood loss was dependent on sex, body weight and height, but these correlat
Insufficient cementation has been suggested to be the most common cause of loosening of the femoral component after total hip arthroplasty A clinical and radiographic study of 129 consecutive, primary total hip replacements was performed 5 years after surgery, in order to evaluate the significance o
Uncemented total hip replacements have resulted in a higher incidence of postoperative complaints than cemented ones. The theoretical explanation of these not well defined discomforts is based on the differences of the stress and strain fields around the distal portions of the femoral components. Wh