A five-station hip joint simulator.

S L Smith; A Unsworth

doi:10.1243/0954411011533535

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PubMed · 11323986

A five-station hip joint simulator.

S L Smith·A Unsworth

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Abstract

A five-station hip joint wear simulator was designed and built which featured simplified motion and loading. An elliptical wear path was produced using approximately sinusoidal motion in the flexion/extension and internal/external rotation axes and the dynamic loading approximated to a square wave. Five 28 mm diameter zirconia femoral heads articulated against ultra-high molecular weight polyethylene acetabular cups in 25 per cent bovine serum for 5 x 10(6) cycles. Gravimetric wear measurement was used with moisture absorption compensation using a dynamically loaded soak control. With motion of physiological magnitude, the mean acetabular cup wear rate was 52.2 mm3/10(6) cycles which is comparable with a number of clinical studies.

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Hip Prosthesis Humans Materials Testing Motion Zirconium Evaluation Study Journal Article Research Support, Non-U.S. Gov't

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S L Smith, A Unsworth. 2001. A five-station hip joint simulator.. https://doi.org/10.1243/0954411011533535

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