In Vivo Analysis of Polyethylene Wear Particles After Total Knee Arthroplasty: The Influence of Improved Materials and Designs

Minoda, Yukihide; Kobayashi, Akio; Iwaki, Hiroyoshi; Iwakiri, Kentarou; Inori, Fumiaki; Sugama, Ryo; Ikebuchi, Mitsuhiko; Kadoya, Yoshinori; Takaoka, Kunio
November 2009
Journal of Bone & Joint Surgery, American Volume;Nov2009 Supplement 6, Vol. 91-A, p67
Academic Journal
The article presents a study on the evaluation of the newly introduced knee prosthesis material and design to reduce polyethylene wear in a total knee arthoplasty. Modification materials and design includes the cross-linked high polyethylene, alumina ceramics, mobile bearings, and medial pivots. A method to isolate and analyze polyethylene particles in the synovial fluid of knees has been developed aside from postoperative radiographs. Moreover, the study found an 80% to 90% wear reduction.


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