Imperial College London


Faculty of EngineeringDepartment of Mechanical Engineering




+44 (0)20 7594 7062a.amis




Ms Fabienne Laperche +44 (0)20 7594 7033




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BibTex format

author = {Wetherell, RG and Unsworth, A and Amis, AA},
doi = {10.1243/PIME_PROC_1992_206_259_02},
journal = {Proc Inst Mech Eng H},
pages = {37--42},
title = {The function of bipolar hip prostheses--a laboratory study using cadaveric acetabula.},
url = {},
volume = {206},
year = {1992}

RIS format (EndNote, RefMan)

AB - Cadaveric acetabula were mounted in a hip simulator and the friction developed in each during articulation with a series of metal femoral head prostheses of differing sizes was measured. In a separate study, assembled Hastings bipolar hip prostheses were subjected to weight-bearing forces in the same acetabula and their self-righting mechanism was observed. The self-righting mechanism was found to function efficiently, in most cases overcoming the combined friction of the inner and outer articulations of the Hastings hip. However, during motion in the hip simulator a wide variation of friction was observed between different acetabula and within the same acetabulum with differing head size. In several cases this acetabular friction was found to be less than the friction in the inner articulation of the Hastings bipolar hip prosthesis, and this may explain some cases of reported failure of biarticular function.
AU - Wetherell,RG
AU - Unsworth,A
AU - Amis,AA
DO - 10.1243/PIME_PROC_1992_206_259_02
EP - 42
PY - 1992///
SN - 0954-4119
SP - 37
TI - The function of bipolar hip prostheses--a laboratory study using cadaveric acetabula.
T2 - Proc Inst Mech Eng H
UR -
UR -
VL - 206
ER -