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All Outputs (102)

Polyurethane unicondylar knee prostheses: simulator wear tests and lubrication studies (2007)
Journal Article
Scholes, S., Unsworth, A., & Jones, E. (2007). Polyurethane unicondylar knee prostheses: simulator wear tests and lubrication studies. Physics in Medicine & Biology, 52(1), 197-212. https://doi.org/10.1088/0031-9155/52/1/013

Many materials are used as artificial joint bearing surfaces; these include conventional stainless steel or CoCrMo-on-ultra-high molecular weight polyethylene (UHMWPE), CoCrMo on itself and alumina-on-alumina. However, these joints have a limited lif... Read More about Polyurethane unicondylar knee prostheses: simulator wear tests and lubrication studies.

Compliant layer acetabular cups: friction testing of a range of materials and designs for a new generation of prosthesis which mimics the natural joint (2006)
Journal Article
Scholes, S., Burgess, I., Marsden, H., Unsworth, A., Jones, E., & Smith, N. (2006). Compliant layer acetabular cups: friction testing of a range of materials and designs for a new generation of prosthesis which mimics the natural joint. Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine, 220(5), 583-596. https://doi.org/10.1243/09544119h06404

Total joint replacements (TJRs) have a limited lifetime, but the introduction of components that exhibit good lubricating properties with low friction and low wear could extend the life of TJRs. A novel acetabular cup design using polyurethane (PU) a... Read More about Compliant layer acetabular cups: friction testing of a range of materials and designs for a new generation of prosthesis which mimics the natural joint.

The tribology of metal-on-metal total hip replacements (2006)
Journal Article
Scholes, S., & Unsworth, A. (2006). The tribology of metal-on-metal total hip replacements. Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine, 220(2), 183-194. https://doi.org/10.1243/09544119jeim40

Total hip surgery is an effective way of alleviating the pain and discomfort caused by diseased or damaged joints. However, in the majority of cases, these joints have a finite life. The main reason for failure is osteolysis (bone resorption). It is... Read More about The tribology of metal-on-metal total hip replacements.

The effect of 'running-in' on the tribology and surface morphology of metal-on-metal Birmingham hip resurfacing device in simulator studies (2006)
Journal Article
Vassilou, K., Elfick, A., Scholes, S., & Unsworth, A. (2006). The effect of 'running-in' on the tribology and surface morphology of metal-on-metal Birmingham hip resurfacing device in simulator studies. Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine, 220(2), 269 - 277. https://doi.org/10.1243/09544119jeim63

It is well documented that hard bearing combinations show a running-in phenomenon in vitro and there is also some evidence of this from retrieval studies. In order to investigate this phenomenon, five Birmingham hip resurfacing devices were tested in... Read More about The effect of 'running-in' on the tribology and surface morphology of metal-on-metal Birmingham hip resurfacing device in simulator studies.

NeuFlex metacarpophalangeal prostheses tested in vitro (2005)
Journal Article
Joyce, T., & Unsworth, A. (2005). NeuFlex metacarpophalangeal prostheses tested in vitro. Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine, 219(H2), 105-110

Design aspects of compliant, soft layer bearings for an experimental hip prosthesis (2005)
Journal Article
Scholes, S., Unsworth, A., Blamey, J., Burgess, I., Jones, E., & Smith, N. (2005). Design aspects of compliant, soft layer bearings for an experimental hip prosthesis. Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine, 219(2), 79-87. https://doi.org/10.1243/095441105x9318

Currently, an artificial hip joint can be expected to last, on average, in excess of 15 years with failure due, in the majority of cases, to late aseptic loosening of the acetabular component. A realistic alternative to the problem of wear in convent... Read More about Design aspects of compliant, soft layer bearings for an experimental hip prosthesis.

Is the wear factor in total joint replacements dependent on the nominal contact stress in ultra-high molecular weight polyethylene contacts? (2004)
Journal Article
Vassiliou, K., & Unsworth, A. (2004). Is the wear factor in total joint replacements dependent on the nominal contact stress in ultra-high molecular weight polyethylene contacts?. Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine, 218(2), 101-107. https://doi.org/10.1243/095441104322983997

The exact dependence of wear factor on contact stress, load and apparent contact area is much disputed in the literature. This study attempts to solve this dispute. Pin-on-plate studies of ultra high molecular weight polyethylene against stainless st... Read More about Is the wear factor in total joint replacements dependent on the nominal contact stress in ultra-high molecular weight polyethylene contacts?.

Untitled (2003)
Journal Article
Joyce, T., Unsworth, A., & Milner, R. (2003). Untitled. Journal of Hand Surgery (European Volume), 28B(5), 505-506

The nature and dissemination of UHMWPE wear debris retrieved from periprosthetic tissue of THR (2003)
Journal Article
Elfick, A., Green, S., Krikler, S., & Unsworth, A. (2003). The nature and dissemination of UHMWPE wear debris retrieved from periprosthetic tissue of THR. Journal of biomedical materials research, 65A(1), 95-108. https://doi.org/10.1002/jbm.a.10455

The role of wear debris in provoking joint replacement failure through bone resorption is now supported by much research. This study presents the analysis of 104 tissue samples using laser diffraction wear particle analysis in conjunction with standa... Read More about The nature and dissemination of UHMWPE wear debris retrieved from periprosthetic tissue of THR.

Untitled (2002)
Journal Article
Joyce, T., & Unsworth, A. (2002). Untitled. Journal of Arthroplasty, 17(8), 1078-1078