Distal Femoral Rotation Correlates With Proximal Tibial Joint Line Obliquity: A Consideration for Kinematic Total Knee Arthroplasty.
Background: We hypothesized that there is a correlation between the distal femoral rotation and proximal tibial joint line obliquity in nonarthritic knees. This has significance for kinematic knee arthroplasty, in which the target knee alignment desired approximates the knee before disease.Methods:...
| Publicado en: | Journal of Arthroplasty Vol. 33; no. 6; pp. 1936 - 1945 |
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| Autores principales: | , , , , , |
| Formato: | Journal Article |
| Publicado: |
Churchill Livingstone, Inc.
Jun2018
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=129646216&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 129646216 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 08835403 1GFQ jtl: Journal of Arthroplasty issn: 08835403 maglogo: N pubinfo: dt: Jun2018 vid: 33 iid: 6 pid: 1242 pub: Churchill Livingstone, Inc. artinfo: ui: 129646216 129646216 NLM29395720 10.1016/j.arth.2017.12.025 NLM29395720 129646216 ppf: 1936 ppct: 9 formats: tig: atl: Distal Femoral Rotation Correlates With Proximal Tibial Joint Line Obliquity: A Consideration for Kinematic Total Knee Arthroplasty. aug: au: Ng, Chung Kia Chen, Jerry Yongqiang Yeh, Jared Ze Yang Ho, Jade Pei Yuik Merican, Azhar M. Yeo, Seng Jin affil: National Orthopaedic Centre of Excellence in Research and Learning (NOCERAL), Department of Orthopaedic Surgery, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia sug: subj: Arthroplasty, Replacement, Knee Methods Tibia Surgery Osteoarthritis, Knee Surgery Knee Joint Surgery Femur Surgery Reproducibility of Results Imaging, Three-Dimensional Tomography, X-Ray Computed Aged Middle Age Male Kinematics Rotation Range of Motion Software Fractures Surgery Female Aged: 65+ years Middle Aged: 45-64 years Male Female ab: Background: We hypothesized that there is a correlation between the distal femoral rotation and proximal tibial joint line obliquity in nonarthritic knees. This has significance for kinematic knee arthroplasty, in which the target knee alignment desired approximates the knee before disease.Methods: Fifty computed tomography scans of nonarthritic knees were evaluated using three-dimensional image processing software. Four distal femoral rotational axes were determined in the axial plane: the transepicondylar axis (TEA), transcondylar axis (TCA), posterior condylar axis (PCA), and a line perpendicular to Whiteside's anterior-posterior axis. Then, angles were measured relative to the TEA. Tibial joint line obliquity was measured as the angle between the proximal tibial plane and a line perpendicular to the axis of the tibia.Results: There was a strong positive correlation between PCA-TEA and tibial joint line obliquity (r = 0.68, P < .001) as well as TCA-TEA and tibial joint line obliquity (r = 0.69, P < .001). In addition, the tibial joint line obliquity and TCA-TEA angles were similar, 3.7° ± 2.2° (mean ± standard deviation) and 3.5° ± 1.7°, respectively (mean difference, 0.2° ± 0.2°; P = .369).Conclusion: Both PCA-TEA and TCA-TEA strongly correlated with proximal tibial joint line obliquity indicating a relationship between distal femoral rotational geometry and proximal tibial inclination. These findings could imply that the native knee in flexion attempts to balance the collateral ligaments toward a rectangular flexion space. A higher tibial varus inclination is matched with a more internally rotated distal femur relative to the TEA. pubtype: Academic Journal doctype: Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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