Contact Area as a Critical Determinant in the Tribology of Metal-on-Polyethylene Total Joint Arthroplasty
Keyword(s):
The effects of contact area and contact stress on friction and wear of polyethylene-metal articulation were evaluated using a bi-directional pin-on-disk apparatus. A doubling of the contact area under fixed loading conditions led to a 50% increase in the coefficient of friction and a doubling of the wear rate. There appeared to be a relationship between the increase in wear rate and the increase in the coefficient of friction. A model was developed to explain the mechanism by which engagement of asperities results in the increasing wear rate with increasing contact area despite the decreased stress.
2001 ◽
Vol 16
(12)
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pp. 3567-3574
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2020 ◽
pp. 135065012093751
2012 ◽
Vol 585
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pp. 569-573
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2020 ◽
pp. 135065012092560
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