text: Patent US5133758 - Total knee endoprosthesis with fixed flexion-extension axis of rotation - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsThe invention is a total knee endoprosthesis with a fixed flexion-extensionxis throughout all degrees of flexion and extension of the knee. The endoprosthesis has a femoral component with spaced apart medial and lateral condyle portions which slidably seat on a tibial implant portion. The fixed flexion-extension...http://www.google.com/patents/US5133758?utm_source=gb-gplus-sharePatent US5133758 - Total knee endoprosthesis with fixed flexion-extension axis of rotationAdvanced Patent SearchPublication numberUS5133758 APublication typeGrantApplication numberUS 07/760,115Publication dateJul 28, 1992Filing dateSep 16, 1991Priority dateSep 16, 1991Fee statusPaidAlso published asCA2119016A1, CA2119016C, EP0678011A1, EP0678011A4, US5326361, WO1993005729A2, WO1993005729A3Publication number07760115, 760115, US 5133758 A, US 5133758A, US-A-5133758, US5133758 A, US5133758AInventorsAnne HollisterOriginal AssigneeResearch And Education Institute, Inc. Harbor-Ucla Medical CenterExport CitationBiBTeX, EndNote, RefManPatent Citations (6), Referenced by (118), Classifications (5), Legal Events (6) External Links: USPTO, USPTO Assignment, EspacenetTotal knee endoprosthesis with fixed flexion-extension axis of rotation
  1. A total knee endoprosthesis having a fixed flexion-extension axis of rotation for implantation in a patient's body, comprising:a femoral implant component for connection to the distal end of the recipient's femur bone, said femoral implant component having a medial condyle portion and a lateral condyle portion, said medial condyle and lateral condyle portions being spaced apart at their posterior and distal portions and having a patellar groove located at least partially therebetween on an anterior position of said femoral implant component, said medial condyle portion being larger than said lateral condyle portion, said posterior and distal portions of said condyles being circular in cross-section through a sweep of over 120 degrees and having a non-moving center of rotation; and a tibial implant component for connection to the proximal end of the patient's tibia bone, said tibial implant component having a plateau surface facing said femoral implant component, said plateau surface having a medial and lateral concavity defined thereon, s
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