A hip joint simulator study using simplified loading and motion cycles generating physiological wear paths and rates

Abstract In some designs of hip joint simulator the cost of building a highly complex machine has been offset with the requirement for a large number of test stations. The application of the wear results generated by these machines depends on their ability to reproduce physiological wear rates and processes. In this study a hip joint simulator has been shown to reproduce physiological wear using only one load vector and two degrees of motion with simplified input cycles. The actual path of points on the femoral head relative to the acetabular cup were calculated and compared for physiological and simplified input cycles. The in vitro wear rates were found to be highly dependent on the shape of these paths and similarities could be drawn between the shape of the physiological paths and the simplified elliptical paths.

[1]  T. Ilchmann,et al.  Polyethylene wear in Scanhip arthroplasty with a 22 or 32 mm head: 62 matched patients followed for 7-9 years. , 1996, Acta orthopaedica Scandinavica.

[2]  I C Clarke,et al.  Wear of Artificial Joint Materials IV , 1981 .

[3]  H S Dobbs,et al.  Wear studies on prosthetic materials using the pin-on-disc machine. , 1982, Biomaterials.

[4]  G. Smidt,et al.  Measurement of hip-joint motion during walking. Evaluation of an electrogoniometric method. , 1969, The Journal of bone and joint surgery. American volume.

[5]  G. Smidt,et al.  Measurement of hip joint motion during walking , 1969 .

[6]  B. Seedhom,et al.  Walking activities and wear of prostheses. , 1985, Annals of the rheumatic diseases.

[7]  V O Saikko,et al.  A Three-Axis Hip Joint Simulator for Wear and Friction Studies on Total Hip Prostheses , 1996, Proceedings of the Institution of Mechanical Engineers. Part H, Journal of engineering in medicine.

[8]  C. Engh,et al.  Wear of Polyethylene Cups in Total Hip Arthroplasty. A Study of Specimens Retrieved Post Mortem* , 1996, The Journal of bone and joint surgery. American volume.

[9]  A. Wang,et al.  Comparison of the size and morphology of UHMWPE wear debris produced by a hip joint simulator under serum and water lubricated conditions. , 1996, Biomaterials.

[10]  M. Semlitsch,et al.  Reactions of the articular capsule to wear products of artificial joint prostheses. , 1977, Journal of biomedical materials research.

[11]  P. Huie,et al.  Tissue ingrowth and differentiation in the bone-harvest chamber in the presence of cobalt-chromium-alloy and high-density-polyethylene particles. , 1995, The Journal of bone and joint surgery. American volume.

[12]  M Viceconti,et al.  Discussion on the design of a hip joint simulator. , 1996, Medical engineering & physics.

[13]  J H Dumbleton,et al.  Mechanistic and Morphological Origins of Ultra-High Molecular Weight Polyethylene Wear Debris in Total Joint Replacement Prostheses , 1996, Proceedings of the Institution of Mechanical Engineers. Part H, Journal of engineering in medicine.

[14]  Duncan Dowson,et al.  Laboratory wear tests and clinical observations of the penetration of femoral heads into acetabular cups in total replacement hip joints , 1985 .

[15]  J Fisher,et al.  Wear of ultra-high molecular weight polyethylene acetabular cups in a physiological hip joint simulator in the anatomical position using bovine serum as a lubricant , 1997, Proceedings of the Institution of Mechanical Engineers. Part H, Journal of engineering in medicine.

[16]  J. Charnley,et al.  Rate of wear in total hip replacement. , 1975, Clinical orthopaedics and related research.

[17]  D Dowson,et al.  Design and development of a versatile hip joint simulator and a preliminary assessment of wear and creep in Charnley total replacement hip joints. , 1988, Engineering in medicine.

[18]  Brian J. Edwards,et al.  Orientation softening in the deformation and wear of ultra-high molecular weight polyethylene , 1997 .

[19]  C. Bragdon,et al.  The Importance of Multidirectional Motion on the Wear of Polyethylene , 1996, Proceedings of the Institution of Mechanical Engineers. Part H, Journal of engineering in medicine.

[20]  D Dowson,et al.  Prospective clinical and joint simulator studies of a new total hip arthroplasty using alumina ceramic heads and cross-linked polyethylene cups. , 1996, The Journal of bone and joint surgery. British volume.

[21]  Duncan Dowson,et al.  Assessment of the Change in Volume of Acetabular Cups Using a Coordinate Measuring Machine , 1994 .

[22]  Duncan Dowson,et al.  The effect of transfer film and surface roughness on the wear of lubricated ultra-high molecular weight polyethylene , 1993 .

[23]  D. Dowson,et al.  Comparative study of the wear of UHMWPE with zirconia ceramic and stainless steel femoral heads in artificial hip joints. , 1994, Medical engineering & physics.

[24]  I C Clarke,et al.  Wear characteristics of UHMW polyethylene: a method for accurately measuring extremely low wear rates. , 1978, Journal of biomedical materials research.

[25]  H. Mckellop,et al.  The wear behavior of ion-implanted Ti-6A1-4V against UHMW polyethylene. , 1990, Journal of biomedical materials research.

[26]  G. Winter,et al.  Evaluation of biomaterials , 1980 .

[27]  J. P. Paul,et al.  Paper 8: Forces Transmitted by Joints in the Human Body: , 1966 .

[28]  P. Campbell,et al.  Wear and Morphology of Ultra-High Molecular Weight Polyethylene Wear Particles from Total Hip Replacements , 1996, Proceedings of the Institution of Mechanical Engineers. Part H, Journal of engineering in medicine.

[29]  B. Wroblewski,et al.  Quantitative analysis of polyethylene wear debris, wear rate and head damage in retrieved Charnley hip prostheses , 2000, Journal of materials science. Materials in medicine.

[30]  J Fisher,et al.  Ultra-High Molecular Weight Polyethylene Wear Debris Generated in Vivo and in Laboratory Tests; the Influence of Counterface Roughness , 1996, Proceedings of the Institution of Mechanical Engineers. Part H, Journal of engineering in medicine.

[31]  A Unsworth,et al.  Wear in Retrieved Charnley Acetabular Sockets , 1996, Proceedings of the Institution of Mechanical Engineers. Part H, Journal of engineering in medicine.

[32]  D. Howie,et al.  A rat model of resorption of bone at the cement-bone interface in the presence of polyethylene wear particles. , 1988, The Journal of bone and joint surgery. American volume.