ArticleKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA2020
Articular surface of the medial proximal tibia is aligned parallel to the ground in three-dimensional space under weight-bearing conditions in healthy and varus osteoarthritic knees.
Article in Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed.
- Radiographic Analysis of Lower Limb Alignment in Patients with Knee Osteoarthritis.Tomography (Ann Arbor, Mich.) · 2026Article
- The comparison of three dimensional and two dimensional evaluation of varus/valgus stress X-rays following total knee arthroplasty.Journal of orthopaedic surgery and research · 2025Article
- Association between three-dimensional gait kinematics and joint-line inclination in osteoarthritic knees compared with normal knees: An epidemiological study.Journal of experimental orthopaedics · 2024Article
- Medial cortical bone thickness of the tibial diaphysis in osteoarthritis is related to lower extremity alignment and tibial morphology.Journal of orthopaedic surgery and research · 2024Article
- The Matsudai Knee Osteoarthritis Survey showed the longitudinal changes of knee phenotypes in alignment and structure during 23-28 years.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2023Article
- Variability of functional knee phenotype for coronal alignment in advanced varus knee osteoarthritis in the Japanese population.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2023Article
- The coronal inclination of the medial tibial plateau affects coronal gait kinematics for varus osteoarthritic knees.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2022Article
- The medial inclination of the proximal tibia is associated with the external knee adduction moment in advanced varus knee osteoarthritis.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2022Article
- Cortical thickness of the tibial diaphysis reveals age- and sex-related characteristics between non-obese healthy young and elderly subjects depending on the tibial regions.Journal of experimental orthopaedics · 2020Article
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Authors and funding
11 authors.
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Abstract
purposeTo test the hypothesis that an inclined articular surface on the medial proximal tibia is aligned more parallel to the ground in three-dimensional (3D) space under weight-bearing (WB) conditions (parallel phenomenon) than under non-WB (NWB) conditions in healthy and varus osteoarthritic knees.
methodsWe examined 55 healthy knees (26 women, 29 men; mean age, 70 ± 6 years) and 108 varus osteoarthritic knees (66 women, 16 men; mean age, 74 ± 7 years). For the evaluation under WB conditions, a 3D assessment system was used on biplanar long-leg radiographs and 3D bone models using a 3D-to-2D image registration technique. In addition, the least square method was used to determine the approximation plane. The angles between the normal vector for the approximation plane of an articular surface on the medial proximal tibia and each axis of the tibial or world coordinate system were calculated.
resultsMorphologically, the inclination of the approximation plane was steeper in osteoarthritic knees than in healthy knees (p < 0.0001). The approximation plane was aligned more parallel to the ground under WB conditions than under NWB conditions in healthy (p < 0.0001) and osteoarthritic knees (p < 0.0001).
conclusionsThe parallel phenomenon in the medial proximal tibia was confirmed for healthy and varus osteoarthritic knees. The medial proximal tibia plays an important role in the parallel phenomenon, assumingly associated with varus alignment and varus thrust. The inclination of the medial proximal tibia may become a new parameter for imaging investigations. LEVEL OF EVIDENCE: III.
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