PDF(Pubmed)
Abstract：
UNASSIGNED: Hallux valgus, a common foot deformity, often necessitates surgical intervention. This study evaluates the biomechanical alterations in patients post-surgery, focusing on the efficacy of an \"8\" bandage fixation system to promote optimal recovery.
UNASSIGNED: A three-dimensional (3D) model was constructed using CT data from a patient with hallux valgus. A quasi-static finite element analysis (FEA) was conducted in conjunction with gait analysis to evaluate the biomechanical changes at the osteotomy site under \"8\" shaped bandage fixation following hallux valgus surgery. The effects of the \"8\" shaped bandage on the stability of the osteotomy site and bone healing were investigated at three load points during the gait cycle.
UNASSIGNED: During the Loading Response (LR), Midstance (MSt), and Terminal stance TSt phases, the osteotomy end experienced maximum Von Mises stresses of 0.118, 1.349, and 1.485 MPa, respectively. Correspondingly, the maximum principal stresses, all of which were compressive along the Z-axis, were 0.11662 N, 1.39266 N, and 1.46762 N, respectively. Additionally, these phases showed a maximum relative total displacement of 0.848 mm and a maximum relative shear displacement of 0.872 mm.
UNASSIGNED: During the stance phase, the osteotomy end of the first metatarsal is predominantly subjected to compressive stress, with the relative displacement within the safe range to promote healing. The application of an \"8\" bandage for external fixation after surgery can maintain the dynamic stability of osteotomy sites post-minimally invasive hallux valgus correction during the gait cycle, thereby promoting the healing of the osteotomy ends.
UNASSIGNED: A three-dimensional (3D) model was constructed using CT data from a patient with hallux valgus. A quasi-static finite element analysis (FEA) was conducted in conjunction with gait analysis to evaluate the biomechanical changes at the osteotomy site under \"8\" shaped bandage fixation following hallux valgus surgery. The effects of the \"8\" shaped bandage on the stability of the osteotomy site and bone healing were investigated at three load points during the gait cycle.
UNASSIGNED: During the Loading Response (LR), Midstance (MSt), and Terminal stance TSt phases, the osteotomy end experienced maximum Von Mises stresses of 0.118, 1.349, and 1.485 MPa, respectively. Correspondingly, the maximum principal stresses, all of which were compressive along the Z-axis, were 0.11662 N, 1.39266 N, and 1.46762 N, respectively. Additionally, these phases showed a maximum relative total displacement of 0.848 mm and a maximum relative shear displacement of 0.872 mm.
UNASSIGNED: During the stance phase, the osteotomy end of the first metatarsal is predominantly subjected to compressive stress, with the relative displacement within the safe range to promote healing. The application of an \"8\" bandage for external fixation after surgery can maintain the dynamic stability of osteotomy sites post-minimally invasive hallux valgus correction during the gait cycle, thereby promoting the healing of the osteotomy ends.
摘要：
■哈氏外翻，常见的足部畸形,通常需要手术干预。这项研究评估了手术后患者的生物力学改变，注重“8”绷带固定系统的疗效，促进最佳恢复。
■使用来自拇指外翻患者的CT数据构建三维（3D）模型。结合步态分析进行准静态有限元分析（FEA），以评估“8”形绷带固定下的截骨部位的生物力学变化外翻手术后。在步态周期的三个负荷点研究了\“8”形绷带对截骨部位稳定性和骨愈合的影响。
■在加载响应（LR）期间，Midstance(MSt),和终端姿态TST阶段，截骨末端经历了0.118、1.349和1.485MPa的最大VonMises应力，分别。相应地,最大主应力,所有这些都是沿Z轴压缩的，是0.11662N，1.39266N,和1.46762N，分别。此外,这些阶段显示最大相对总位移0.848毫米和最大相对剪切位移0.872毫米。
■在站立阶段，第一跖骨的截骨端主要承受压应力，与相对位移在安全范围内，以促进愈合。术后应用“8”绷带外固定可保持微创外翻矫正术后截骨部位在步态周期内的动态稳定性，从而促进截骨末端的愈合。
■使用来自拇指外翻患者的CT数据构建三维（3D）模型。结合步态分析进行准静态有限元分析（FEA），以评估“8”形绷带固定下的截骨部位的生物力学变化外翻手术后。在步态周期的三个负荷点研究了\“8”形绷带对截骨部位稳定性和骨愈合的影响。
■在加载响应（LR）期间，Midstance(MSt),和终端姿态TST阶段，截骨末端经历了0.118、1.349和1.485MPa的最大VonMises应力，分别。相应地,最大主应力,所有这些都是沿Z轴压缩的，是0.11662N，1.39266N,和1.46762N，分别。此外,这些阶段显示最大相对总位移0.848毫米和最大相对剪切位移0.872毫米。
■在站立阶段，第一跖骨的截骨端主要承受压应力，与相对位移在安全范围内，以促进愈合。术后应用“8”绷带外固定可保持微创外翻矫正术后截骨部位在步态周期内的动态稳定性，从而促进截骨末端的愈合。
