Hard-on-Hard Total Hip Impingement Causes Extreme Contact Stress Concentrations
نویسندگان
چکیده
منابع مشابه
SYMPOSIUM: UPDATE ON HARD-ON-HARD BEARINGS IN HIP ARTHROPLASTY Survival of Hard-on-Hard Bearings in Total Hip Arthroplasty
Background Improvements in prosthetic materials, designs, and implant fixation for THA have led to bearing surface wear being the limitation of this technology. Hardon-hard bearings promise decreased wear rates and increased survival. However, there may be different survival rates based on bearing materials, manufacturing technologies, and femoral component designs. Additionally, survival rate ...
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The tribological performance of an artificial hip joint has a particularly strong influence on its success. The principle causes for failure are adverse short- and long-term reactions to wear debris and high frictional torque in the case of poor lubrication that may cause loosening of the implant. Therefore, using experimental and theoretical approaches models have been developed to evaluate lu...
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Six cases are presented in which hard contact lenses have migrated into the periocular soft tissues, four into the eyelid, one into the orbit and one which spontaneously reappeared on the cornea 12 years after the patient had last worn contact lenses. Some possible mechanisms of this phenomenon and a review of the literature are presented.
متن کاملHip contact stress and femoral neck retroversion: a biomechanical study to evaluate implication of femoroacetabular impingement
The current literature on femoroacetabular impingement (FAI) is focused on acetabular orientation and femoral head asphericity, with little emphasis on the effect of version of the femoral neck. A biomechanical model was developed to determine the causative effect, if any, of femoral retroversion on hip contact stress and, if present, delineate the type of FAI with femoral neck retroversion. Fi...
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ژورنال
عنوان ژورنال: Clinical Orthopaedics & Related Research
سال: 2011
ISSN: 0009-921X
DOI: 10.1007/s11999-010-1632-x