ArticleJournal of orthopaedic surgery and research2025
Distinct effects of three knee-preserving surgeries on hip-knee-ankle alignment in patients with knee osteoarthritis.
Article in Journal of orthopaedic surgery and research, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed.
- Biomechanical evaluation of a novel hockey-stick locking plate featuring a pes anserinus-sparing design: a finite element analysis.Frontiers in surgery · 2025Article
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7 authors.
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Abstract
backgroundUnicompartmental knee arthroplasty (UKA), high tibial osteotomy (HTO), and distal femoral osteotomy (DFO) are common knee-preserving surgeries for knee osteoarthritis (KOA), yet systematic comparisons of their effects on lower limb biomechanical parameters remain limited.
objectiveTo retrospectively evaluate and compare the impacts of UKA, HTO, and DFO on hip-knee-ankle alignment in KOA patients, providing evidence for personalized surgical strategy formulation. We hypothesized that these procedures would exert differential effects on specific alignment parameters.
methodsA total of 256 patients with knee osteoarthritis were initially screened. After applying the inclusion and exclusion criteria, 150 patients were enrolled and assigned to the UKA, HTO, or DFO group (50 patients per group). Preoperative and postoperative changes in seven alignment parameters were measured: medial proximal tibial angle (MPTA), mechanical greater trochanter angle (MGTA), femorotibial anatomic angle (FTA), distal tibial femoral angle (DTTA), talar dome mechanical axis angle (TDMA), talar tilt angle (TTA), and the mechanical axis percentage (%MA). Intergroup differences in these parameters were analyzed statistically.
results(1) Baseline demographics and preoperative lower limb alignment parameters were comparable across groups. (2) UKA significantly changed MPTA, FTA, DTTA, TDMA, and %MA, but not MGTA or TTA. (3) DFO significantly changed MPTA, MGTA, FTA, and %MA, but not DTTA, TDMA, or TTA. (4) HTO significantly modified MPTA, MGTA, FTA, DTTA, TDMA and %MA, except for TTA. (5) UKA vs. HTO: No differences in FTA or DTTA, but significant differences in MPTA, MGTA, TDMA, TTA, and %MA. (6) UKA vs. DFO: No differences in MPTA or DTTA, but significant disparities in MGTA, FTA, TDMA, TTA and %MA.
conclusionUKA, HTO, and DFO each influence lower limb biomechanics in KOA patients, with distinct effects on specific alignment parameters. Surgical selection should prioritize individual anatomical and pathological characteristics to achieve personalized care.
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