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Acetabular cup with supplemental screw fixation using conical interference fit between screw and cup
Acetabular cup with supplemental screw fixation using conical interference fit between screw and cup
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机译:髋臼杯,通过螺钉和杯之间的锥形过盈配合,进行辅助螺钉固定
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摘要
A fixation technique is provided whereby a solid metal acetabular cup, such as is used with hip resurfacing implants, or so called “metal on metal” bearings used with traditional total hip replacement, which do use supplemental screw fixation, can achieve immediate fixation to the acetabulum using a acetabular fixation screw, which couples to an acetabular metal cup by way of a precision taper coupling (tapered interference fit) between the fixation screw and the acetabular cup. Under normal loading, the cold weld achieved between the two surfaces is stable, and disassociation between the two metal surfaces can be achieved only with significant force.
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