1. Change in leg length after open-wedge high tibial osteotomy can be predicted from the opening width: A three-dimensional analysis.
- Author
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Yamamuro Y, Kabata T, Goshima K, Kajino Y, Inoue D, Ohmori T, Ueno T, Takagi T, Yoshitani J, Ueoka K, Taninaka A, and Tsuchiya H
- Subjects
- Aged, Arthroplasty, Replacement, Knee, Female, Humans, Knee surgery, Leg diagnostic imaging, Leg surgery, Male, Middle Aged, Postoperative Period, Retrospective Studies, Tibia diagnostic imaging, Tomography, X-Ray Computed, Virtual Reality, Leg anatomy & histology, Osteotomy methods, Tibia surgery
- Abstract
Background: The purpose of this study was to evaluate true change in leg length after open-wedge high tibial osteotomy (OWHTO) using three-dimensional (3D) assessments, examine the factors that influence leg lengthening and verify their validity in clinical practice., Methods: Study 1: a retrospective case series simulation study, included 46 patients (55 knees) that underwent knee arthroplasty or HTO. OWHTO was simulated from preoperative computed tomography using 3D preoperative planning software. Uni- and multivariate regression analyses were conducted to identify predictors related to change in leg length. Study 2: a retrospective case series study, included 53 patients (55 knees) that underwent OWHTO in another institution. Change in leg length was measured preoperatively and 1 year postoperatively and was compared with the predicted change in leg length calculated using the formula obtained from Study 1., Results: Study 1: the true change in leg length significantly increased and showed a strong correlation with the opening width. The change in leg length was predicted using the formula "change in leg length = opening width × 0.75-1.5." Study 2: the predicted change in leg length showed no significant difference from the change in leg length 1 year postoperatively and a strong correlation with the measured change., Conclusions: The true change in leg length after OWHTO was predicted using the formula obtained from the 3D model. Predicting the change in leg length preoperatively can be a basis to consider other HTOs., Competing Interests: Declaration of Competing Interest Each author certifies that he has no commercial associations (e.g., consultancies, stock ownership, equity interest, patent/licensing arrangements) that might pose a conflict of interest in connection with the submitted article., (Copyright © 2021 Elsevier B.V. All rights reserved.)
- Published
- 2021
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