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In Vivo Contact Kinematics and Contact Forces of the Knee After Total Knee Arthroplasty During Dynamic Weight-bearing Activities by Kartik M. Varadarajan; Angela L. Moynihan; Darryl D’Lima; Clifford W. Colwell; Guoan Li is a Medicine article available to read on EtoBox.
What is In Vivo Contact Kinematics and Contact Forces of the Knee After Total Knee Arthroplasty During Dynamic Weight-bearing Activities about?
Analysis of polyethylene component wear and implant loosening in total knee arthroplasty (TKA) requires precise knowledge of in vivo articular motion and loading conditions. This study presents a simultaneous in vivo measurement of tibiofemoral articular contact forces and contact kinematics in three TKA patients. These measurements were accomplished via a dual fluoroscopic imaging system and instrumented tibial implants, during dynamic single leg lunge and chair rising-sitting. The measured forces and contact locations were also used to determine mediolateral distribution of axial contact forces. Contact kinematics data showed a medial pivot during flexion of the knee, for all patients in the study. Average axial forces were higher for lunge compared to chair rising-sitting (224% vs. 187% body weight). In this study, we measured peak anteroposterior and mediolateral forces averaging 13.3% BW during lunge and 18.5% BW during chair rising-sitting. Mediolateral distributions of axial contact force were both patient and activity specific. All patients showed equitable medial-lateral loading during lunge but greater loads at the lateral compartment during chair rising-sitting. The resu
Who reads In Vivo Contact Kinematics and Contact Forces of the Knee After Total Knee Arthroplasty During Dynamic Weight-bearing Activities?
It is typically read by researchers, students, and practitioners in Medicine.
- Author
- Kartik M. Varadarajan; Angela L. Moynihan; Darryl D’Lima; Clifford W. Colwell; Guoan Li
- Publisher
- Elsevier Science; Elsevier ; Elsevier BV (ISSN 0021-9290)
- Published
- 2008
- Language
- EN
- Field
- Medicine (Health Sciences)