ArticleJoint diseases and related surgery2026
Reduced lateral hinge stress and fracture risk in double-hinge medial open-wedge high tibial osteotomy: A finite element study.
Article in Joint diseases and related surgery, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
objectivesThis study aims to describe the double-hinge medial open wedge high tibial osteotomy (DH-MOWHTO) with two lateral hinges and to investigate its feasibility and its utility in prevention of lateral hinge fractures (LHFs) using a finite element analysis (FEA) model. MATERIALS AND
methodsThree osteotomies were modeled. Model 1 (DH-MOWHTO) involved two monoplanar osteotomies from the same starting point, while Models 2 and 3 were standard monoplanar osteotomies using one osteotomy line from Model 1. They were compared in terms of maximum von-Mises stress value (MPa) in the hinges at 10° correction angle, gap distance at 10° correction angle (mm), force required to achieve a 10° correction angle (N), and total surface area (mm
resultsIn DH-MOWHTO, the maximum anterior hinge stress at 10º correction angle was reduced by 28.1 to 39.6% and the maximum posterior hinge stress was reduced by 19.2 to 60.1% compared to single monoplanar osteotomies. The average stress reduction in the hinges was 36%. The force required for a 10° correction was approximately 78 N, 114 N and 85 N for Models 1, 2 and 3, respectively. The model with two monoplanar osteotomies had approximately 1.8 and 2 times more osteotomy surface area than Models 2 and 3, respectively.
conclusionIn this FEA study, two lateral hinges can be created in MOWHTO and lower hinge stresses can be obtained by applying lower forces with this osteotomy. In the light of these findings, DH-MOWHTO may be a novel osteotomy technique to avoid LHF.
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