Floerkemeier, Thilo and Frosch, Karl-Heinz and Wachowski, Martin and Kubein-Meesenburg, Dietmar and Gezzi, Riccardo and Fanghaenel, Jochen and Stuermer, Klaus Michael and Naegerl, Hans (2011) Physiologically shaped knee arthroplasty induces natural roll-back. TECHNOLOGY AND HEALTH CARE, 19 (2). pp. 91-102. ISSN 0928-7329,
Full text not available from this repository. (Request a copy)Abstract
After total knee replacement the persistence of pain represents a significant problem. In this study, a novel knee arthroplasty (Aequos G1 knee arthroplasty) is investigated that was designed to replicate main features of human knee morphology to reduce the periodically occurring pain after knee replacement. Previous work showed theoretically that this arthroplasty design may reconstruct the four-bar linkage mechanism as it occurs in human knee by contriving a convex lateral tibial compartment and a sagittal offset of the centre of the medial and lateral femur condyles - inducing a roll-back mechanism as it exists in human. The aim of this study was to determine whether this potential roll-back mechanism can be confirmed by in-vivo measurements. This retrospective study showed that the patellar tendon angle decreases during flexion of 0.21 degrees per degree of flexion on average in the 16 knees studied. This amount is similar to physiological knee kinematics and in contrast to existing results in the literature after implantation of conventional total knee replacements which lack physiological knee kinematics. The results suggest that physiological motion after implantation of the Aequos G1 knee arthroplasty occurs during loaded motion up to approximately 45 degrees knee flexion.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ; Knee arthroplasty; kinematics; roll-gliding mechanism; anterior knee pain |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Kieferorthopädie |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 02 Jul 2020 12:22 |
| Last Modified: | 02 Jul 2020 12:22 |
| URI: | https://pred.uni-regensburg.de/id/eprint/21699 |
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