Journal article
Total Knee Post-Cam Design Variations and Their Effects on Kinematics and Wear Patterns
Orthopedics (Thorofare, N.J.), v 39(3), pp S45-S49
01 May 2016
PMID: 27219727
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Post-cam designs for posterior-stabilized total knee arthroplasy (TKA) implants have evolved over the last 2 decades. These designs have evolved from symmetric post and cam to asymmetric designs that include anterior post interactions to affect a kinematic change in full extension. All design changes have consequences on the resulting femorotibial contact kinematics and, depending on the amount of constraint built into the design, these changes may have significant consequences on the wear patterns on the tibial polyethylene insert. The current authors review the kinematic effects of symmetric and asymmetric cam designs and use a retrieval database of TKA implants obtained at the time of necropsy to show how different design variables may affect polyethylene wear patterns after 10 or more years of implantation or from modeled wear in simulators. More modern designs seem to have moved the post posteriorly and sloped the anterior aspect to avoid impingement of the anterior post in terminal flexion on the inferior aspect of the patella button.
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Details
- Title
- Total Knee Post-Cam Design Variations and Their Effects on Kinematics and Wear Patterns
- Creators
- William M. Mihalko - Department of Orthopaedic Surgery and Biomedical EngineeringJulie Lowell - University of Tennessee Health Science CenterGenymphas Higgs - Drexel UniversitySteven Kurtz - Drexel University
- Publication Details
- Orthopedics (Thorofare, N.J.), v 39(3), pp S45-S49
- Publisher
- Slack Inc
- Number of pages
- 5
- Grant note
- DePuy Synthes Formae Aesculap Invibio Kyocera Medical Smith Nephew Stryker Medtronic Stelkast Panoramic Healthcare Corp MicroPort Spinal Motion Ferring Pharmaceuticals Zimmer Biomet Celanese DJO CeramTec Inc Wright Medical Technology Active Implants
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- School of Biomedical Engineering, Science, and Health Systems
- Web of Science ID
- WOS:000377520200009
- Scopus ID
- 2-s2.0-84971433439
- Other Identifier
- 991019167585504721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Orthopedics