Department of Orthopaedics and Traumatology, University Hospital Basel, Basel, Switzerland.
Department of Biomedical Engineering, University of Basel, Basel, Switzerland.
Hip Int. 2024 Jul;34(4):516-523. doi: 10.1177/11207000241230282. Epub 2024 Feb 19.
We aimed to examine the functional outcome in different walking conditions in elderly adults who underwent surgical repair after a non-contact hamstring injury. Our objective was to compare lower limb kinematics and kinetics over the entire gait cycle between the injured and contralateral leg in overground and level and uphill treadmill walking.
12 patients (mean ± SD, age: 65 ± 9 years; body mass index: 30 ± 6 kg/m) walked at self-selected speed in overground (0% slope) and treadmill conditions (0% and 10% slope). We measured spatiotemporal parameters, joint angles (normalised to gait cycle) and joint moments (normalised to stance phase) of the hip, knee and ankle. Data between sides were compared using paired sample -tests ( 0.05) and continuous 95% confidence intervals of the paired difference between trajectories.
Patients walked at an average speed of 1.31 ± 0.26 m/second overground and 0.92 ± 0.31 m/second on the treadmill. Spatiotemporal parameters were comparable between the injured and contralateral leg ( 0.05). Joint kinematic and joint kinetic trajectories were comparable between sides for all walking conditions.
Refixation of the proximal hamstring tendons resulted in comparable ambulatory mechanics at least 1 year after surgery in the injured leg and the contralateral leg, which were all within the range of normative values reported in the literature. These results complement our previous findings on hamstring repair in terms of clinical outcomes and muscle strength and support that surgical repair achieves good functional outcomes in terms of ambulation in an elderly population.
clinicaltrials.gov (NCT04867746).
我们旨在研究非接触性腘绳肌损伤后接受手术修复的老年人在不同行走条件下的功能结果。我们的目的是比较在地面和水平及上坡跑步机行走中，患侧和对侧下肢在整个步态周期中的运动学和动力学。
12 名患者（平均年龄 ± 标准差，65 ± 9 岁；体重指数，30 ± 6 kg/m）以自我选择的速度在地面（0%坡度）和跑步机条件（0%和 10%坡度）下行走。我们测量了髋关节、膝关节和踝关节的时空参数、关节角度（归一化到步态周期）和关节力矩（归一化到支撑相）。使用配对样本 t 检验（ 0.05）和轨迹间配对差异的连续 95%置信区间比较两侧的数据。
患者在地面上的平均速度为 1.31 ± 0.26 m/秒，在跑步机上的速度为 0.92 ± 0.31 m/秒。患侧和对侧下肢的时空参数具有可比性（ 0.05）。在所有行走条件下，关节运动学和关节动力学轨迹在两侧均具有可比性。
近端腘绳肌腱的再固定至少在手术后 1 年在受伤的腿和对侧腿都产生了类似的步行力学，所有这些都在文献中报道的正常值范围内。这些结果补充了我们之前关于腘绳肌修复的临床结果和肌肉力量的研究结果，并支持手术修复在老年人的步行功能方面取得了良好的结果。
clinicaltrials.gov（NCT04867746）。
