Keshmiri, Armin and Maderbacher, Guenther and Baier, Clemens and Sendtner, Ernst and Schaumburger, Jens and Zeman, Florian and Grifka, Joachim and Springorum, Hans R. (2015) The influence of component alignment on patellar kinematics in total knee arthroplasty An in vivo study using a navigation system. ACTA ORTHOPAEDICA, 86 (4). pp. 444-450. ISSN 1745-3674, 1745-3682
Full text not available from this repository. (Request a copy)Abstract
Background and purpose - Postoperative anterior knee pain is one of the most frequent complications after total knee arthroplasty (TKA). Changes in patellar kinematics after TKA relative to the preoperative arthritic knee are not well understood. We compared the patellar kinematics preoperatively with the kinematics after ligament-balanced navigated TKA. Patients and methods - We measured patellar tracking before and after ligament-balanced TKA in 40 consecutive patients using computer navigation. Furthermore, the influences of different femoral and tibial component alignment on patellar kinematics were analyzed using generalized linear models. Results - After TKA, the patellae shifted statistically significantly more laterally between 30 degrees and 60 degrees. The lateral tilt increased at 90 degrees of flexion whereas the epicondylar distance decreased between 45 degrees and 75 degrees of flexion. Sagittal component alignment, but not rotational component alignment, had a significant influence on patellar kinematics. Interpretation - There are major differences in patellar kinematics between the preoperative arthritic knee and the knee after TKA. Combined sagittal component alignment in particular appears to have a major effect on patellar kinematics. Surgeons should be especially aware of altering preoperative sagittal alignment until the possible clinical relevance has been investigated.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | PATELLOFEMORAL JOINT; CONTACT AREAS; ROTATION; TRACKING; |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Orthopädie Medicine > Zentren des Universitätsklinikums Regensburg > Zentrum für Klinische Studien |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 25 Jun 2019 13:35 |
| Last Modified: | 25 Jun 2019 13:35 |
| URI: | https://pred.uni-regensburg.de/id/eprint/5120 |
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