Does Posterior Tibial Slope Influence Knee Kinematics in Medial Stabilized TKA?
Background: During total knee arthroplasty (TKA), one of the key alignment factors to pay attention to is the posterior tibial slope (PTS). The PTS clearly influences the kinematics of the knee joint but must be adapted to the coupling degree of the specific TKA design. So far, there is hardly any l...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-11-01
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| Series: | Journal of Clinical Medicine |
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| Online Access: | https://www.mdpi.com/2077-0383/11/22/6875 |
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| author | Leandra Bauer Christoph Thorwächter Arnd Steinbrück Volkmar Jansson Hannes Traxler Zumreta Alic Boris Michael Holzapfel Matthias Woiczinski |
| author_facet | Leandra Bauer Christoph Thorwächter Arnd Steinbrück Volkmar Jansson Hannes Traxler Zumreta Alic Boris Michael Holzapfel Matthias Woiczinski |
| author_sort | Leandra Bauer |
| collection | DOAJ |
| description | Background: During total knee arthroplasty (TKA), one of the key alignment factors to pay attention to is the posterior tibial slope (PTS). The PTS clearly influences the kinematics of the knee joint but must be adapted to the coupling degree of the specific TKA design. So far, there is hardly any literature including clear recommendations for how surgeons should choose the PTS in a medial stabilized (MS) TKA. The aim of the present study is to investigate the effects of different degrees of PTS on femorotibial kinematics in MS TKA. Materials and Methods: An MS TKA was performed in seven fresh-frozen human specimens successively with 0°, 3°, and 6° of PTS. After each modification, weight-bearing deep knee flexion (30–130°) was performed, and femorotibial kinematics were analyzed. Results: A lateral femoral rollback was observed for all three PTS modifications. With an increasing PTS, the tibia was shifted more anteriorly on the lateral side (0° PTS anterior tibial translation −9.09 (±9.19) mm, 3° PTS anterior tibial translation −11.03 (±6.72) mm, 6° PTS anterior tibial translation 11.86 (±9.35) mm). No difference in the tibial rotation was found for the different PTS variants. All PTS variants resulted in internal rotation of the tibia during flexion. With a 3° PTS, the design-specific medial rotation point was achieved more accurately. Conclusions: According to our findings, we recommend a PTS of 3° when implanting the MS prosthesis used in this study. |
| first_indexed | 2024-03-09T18:15:08Z |
| format | Article |
| id | doaj.art-d28956baeaa445138f7184a4a79cf5df |
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| issn | 2077-0383 |
| language | English |
| last_indexed | 2024-03-09T18:15:08Z |
| publishDate | 2022-11-01 |
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| record_format | Article |
| series | Journal of Clinical Medicine |
| spelling | doaj.art-d28956baeaa445138f7184a4a79cf5df2023-11-24T08:51:37ZengMDPI AGJournal of Clinical Medicine2077-03832022-11-011122687510.3390/jcm11226875Does Posterior Tibial Slope Influence Knee Kinematics in Medial Stabilized TKA?Leandra Bauer0Christoph Thorwächter1Arnd Steinbrück2Volkmar Jansson3Hannes Traxler4Zumreta Alic5Boris Michael Holzapfel6Matthias Woiczinski7Department of Orthopaedics and Trauma Surgery, Musculoskeletal University Center Munich (MUM), University Hospital, LMU Munich, Marchioninistraße 15, 81377 Munich, GermanyDepartment of Orthopaedics and Trauma Surgery, Musculoskeletal University Center Munich (MUM), University Hospital, LMU Munich, Marchioninistraße 15, 81377 Munich, GermanyDepartment of Orthopaedics and Trauma Surgery, Musculoskeletal University Center Munich (MUM), University Hospital, LMU Munich, Marchioninistraße 15, 81377 Munich, GermanyDepartment of Orthopaedics and Trauma Surgery, Musculoskeletal University Center Munich (MUM), University Hospital, LMU Munich, Marchioninistraße 15, 81377 Munich, GermanyCenter for Anatomy and Cell Biology, Division of Anatomy, Medical University of Vienna (MedUni Vienna), Waehringer Str. 13, 1090 Vienna, AustriaCenter for Anatomy and Cell Biology, Division of Anatomy, Medical University of Vienna (MedUni Vienna), Waehringer Str. 13, 1090 Vienna, AustriaDepartment of Orthopaedics and Trauma Surgery, Musculoskeletal University Center Munich (MUM), University Hospital, LMU Munich, Marchioninistraße 15, 81377 Munich, GermanyDepartment of Orthopaedics and Trauma Surgery, Musculoskeletal University Center Munich (MUM), University Hospital, LMU Munich, Marchioninistraße 15, 81377 Munich, GermanyBackground: During total knee arthroplasty (TKA), one of the key alignment factors to pay attention to is the posterior tibial slope (PTS). The PTS clearly influences the kinematics of the knee joint but must be adapted to the coupling degree of the specific TKA design. So far, there is hardly any literature including clear recommendations for how surgeons should choose the PTS in a medial stabilized (MS) TKA. The aim of the present study is to investigate the effects of different degrees of PTS on femorotibial kinematics in MS TKA. Materials and Methods: An MS TKA was performed in seven fresh-frozen human specimens successively with 0°, 3°, and 6° of PTS. After each modification, weight-bearing deep knee flexion (30–130°) was performed, and femorotibial kinematics were analyzed. Results: A lateral femoral rollback was observed for all three PTS modifications. With an increasing PTS, the tibia was shifted more anteriorly on the lateral side (0° PTS anterior tibial translation −9.09 (±9.19) mm, 3° PTS anterior tibial translation −11.03 (±6.72) mm, 6° PTS anterior tibial translation 11.86 (±9.35) mm). No difference in the tibial rotation was found for the different PTS variants. All PTS variants resulted in internal rotation of the tibia during flexion. With a 3° PTS, the design-specific medial rotation point was achieved more accurately. Conclusions: According to our findings, we recommend a PTS of 3° when implanting the MS prosthesis used in this study.https://www.mdpi.com/2077-0383/11/22/6875kinematicsknee rigmedial stabilizedTKAposterior tibial slope |
| spellingShingle | Leandra Bauer Christoph Thorwächter Arnd Steinbrück Volkmar Jansson Hannes Traxler Zumreta Alic Boris Michael Holzapfel Matthias Woiczinski Does Posterior Tibial Slope Influence Knee Kinematics in Medial Stabilized TKA? Journal of Clinical Medicine kinematics knee rig medial stabilized TKA posterior tibial slope |
| title | Does Posterior Tibial Slope Influence Knee Kinematics in Medial Stabilized TKA? |
| title_full | Does Posterior Tibial Slope Influence Knee Kinematics in Medial Stabilized TKA? |
| title_fullStr | Does Posterior Tibial Slope Influence Knee Kinematics in Medial Stabilized TKA? |
| title_full_unstemmed | Does Posterior Tibial Slope Influence Knee Kinematics in Medial Stabilized TKA? |
| title_short | Does Posterior Tibial Slope Influence Knee Kinematics in Medial Stabilized TKA? |
| title_sort | does posterior tibial slope influence knee kinematics in medial stabilized tka |
| topic | kinematics knee rig medial stabilized TKA posterior tibial slope |
| url | https://www.mdpi.com/2077-0383/11/22/6875 |
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