Results 221 to 230 of about 5,384,913 (273)

The Biomechanical Problems of Polyethylene as a Bearing Surface

Clinical Orthopaedics and Related Research, 1990
The metal backings of acetabular components can reduce the available polyethylene thickness, often to an alarming extent. This study indicated that the pitting and cracking of thin polyethylene surfaces have some similarities to tibial and patellar bearings and that creep-related deformation occurred more frequently in thin polyethylene components ...
J P, Collier, M B, Mayor, V A, Surprenant, H P, Surprenant, L A, Dauphinais, R E, Jensen   +5 more
openaire   +2 more sources

Inspection of Bearing Surfaces

Aircraft Engineering and Aerospace Technology, 1942
WHEN man invented the wheel, bearings were introduced into civilization and every machine since devised incorporates, in some form, means of sustaining a loaded member in motion by another fixed member. It is not surprising, therefore, that examination of bearings forms a high proportion of all engineering inspection and the phrase “to look at the ...
openaire   +1 more source

Osteolysis and Ceramic Bearing Surfaces

The Journal of Bone and Joint Surgery-American Volume, 2000
To The Editor: I read with great interest the article "Osteolysis in Association with a Total Hip Arthroplasty with Ceramic Bearing Surfaces" (80-A: 1459-1468, Oct. 1998), by Yoon et al. Although this is not the first article to demonstrate the potentially reactive nature of ceramic particles in and around total hip replacements, it represents the ...
Laurent Sedel, Remy Nizard, Pascal Bizot
  +4 more sources

Alternative Bearing Surfaces

2006
The articulating joints of hip prostheses generate wear debris, and accumulation of wear particles in the local tissues can result in osteolysis, which may ultimately require replacement of the prosthesis. The purpose of new hip bearing materials is to extend implant life by substantially decreasing the amount of wear debris generated thus greatly ...
M. Manley, K. Sutton
openaire   +1 more source

(iii) Bearing surfaces

Orthopaedics and Trauma, 2013
Abstract Alternative bearings surfaces to polyethylene have reduced wear and have led to improved patient outcomes, allowing younger and more active patients to be considered for joint replacements. These bearing surfaces have been developed largely as a response to osteolysis and loosening associated with polyethylene particulate debris.
openaire   +1 more source

Alternate Bearing Surfaces: Ceramic-On-Ceramic

HIP International, 2002
none.
openaire   +2 more sources

Parallel Surface Thrust Bearing

A S L E Transactions, 1958
The theory for the thermal wedge thrust pad is given assuming (a) all the heat is taken away by the oil and (b) the viscosity is constant across the thickness of the film. The viscosity is allowed to vary in the direction of motion. Solutions are obtained by both analytical and relaxation methods for infinite and finite pads.
A. Cameron, W. L. Wood
openaire   +1 more source

Fixation and Bearing Surfaces for the Next Millennium

Orthopedics, 1999
UHMWPE: The Good, Bad, & ...
openaire   +2 more sources

Ceramic on Ceramic Bearing Surfaces

2000
The principal cause of aseptic loosening of total hip arthroplasty (THA) in the mid and long term is caused by the reaction of the periprosthetic bone to wear particles both from the components of the implanted prosthesis (metal, polyethylene, ceramic, carbon, etc.), and from cement if cement is used.
J. Witvoet, R. Nizard, L. Sedel
openaire   +1 more source

Alternative Bearing Surfaces for Arthroplasty

Advances in Bioengineering, 1997
Abstract Elastomeric materials have been suggested for use in total joint arthroplasty as an alternative to ultra high molecular weight polyethylene (UHMWPE).1–2 As a bearing material operating under mixed lubrication regimes, UHMWPE is subject to wear.
Robin M. Graham, Martine LaBerge
openaire   +1 more source