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- W4308178910 abstract "PURPOSE OF THE STUDY To characterize constitutional frontal alignment of the ankle in genua vara, valga, and norma. MATERIAL AND METHODS Long-leg standing radiographs of 589 patients presenting between 2011 and 2020 for knee-complaints because of any reason were chosen from our database. Cases with fractures or history of bony-realignment-surgeries were excluded. The Hip-Knee-Ankle angle (HKA), the mechanical Lateral Distal Tibia Angle (mLDTA), and the Tibia-Plafond-Horizontal-Orientation angle (TPHA) were measured in 354 patients. For this study, neutral frontal alignment of the leg was defined as HKA between -3.0° and +4.0°. HKA-values <-3.0° were defined as genua valga and values >4.0° were defined as genua vara. According to these cutoffs, data was categorized into the following three patient groups: genua vara (n=157), genua norma (n=106), genua valga (n=91). For each group, the ankle alignment in the frontal plane was compared to the HKA. Finally, the three groups were compared to each other. RESULTS In the varus-group, the HKA-value was 6.9°±2.4°, the TPHA-value was 4.7°±3.5°, and the mLDTA-value was 87.4°±4.8°. In the neutral-group, the HKA-value was 1.8°±2.0°, the TPHA-value was 2.5°±2.9°, and the mLDTA-value was 87.2°±4.6°. In the valgus-group, the HKA-value was -6.0°±2.7°, the TPHA-value was -0.2°±4.7°, and the mLDTA-value was 85.0°±4.7°. DISCUSSION The frontal alignment of the ankle joint line depends on the overall frontal alignment of the leg. The TPHA correlates with varus or valgus alignment of the knee, but the mLDTA does not. In patients with valgus-aligned long-leg axis, the TPHA demonstrated less valgus alignment than in patients with varus-aligned long-leg axis. This knowledge is especially useful when planning osteotomies for correction of lower extremity malalignment. CONCLUSIONS During the planning process of osteotomies around the knee, the TPHA should be appreciated because it correlates with the constitutional knee alignment. Key words: valgus, varus, frontal alignment, coronal alignment, osteotomy." @default.
- W4308178910 created "2022-11-08" @default.
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- W4308178910 date "2022-10-15" @default.
- W4308178910 modified "2023-09-26" @default.
- W4308178910 title "The Association between Constitutional Knee Alignment and the Horizontal Orientation of the Ankle Joint Line" @default.
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- W4308178910 doi "https://doi.org/10.55095/achot2022/055" @default.
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