Institute of Biomechanics, BG Unfallklinik Murnau, Germany; Institute of Biomechanics, Paracelsus Medical University Salzburg, Austria.
Institute of Biomechanics, BG Unfallklinik Murnau, Germany; Institute of Biomechanics, Paracelsus Medical University Salzburg, Austria.
Gait Posture. 2022 Jun;95:135-140. doi: 10.1016/j.gaitpost.2022.04.015. Epub 2022 Apr 20.
Calcaneal fractures are among the most common foot injuries and sometimes develop manifold post-surgical complications. Restricted foot movement is one of the main functional limitations which often persists during long-term rehabilitation. Therefore, it is important to quantitatively monitor the biomechanical foot mobility after calcaneal fracture from an early stage in order to achieve an optimal therapeutic treatment.
Evaluation of the Center of Pressure velocity (v) in patients after intrarticular calcaneal fractures during the healing progress from three to 24 months after surgery.
A total of 20 patients with unilateral calcaneal fracture were investigated by means of pedobarography and marker-based gait analysis at three, six, 12 and 24 months after surgery. Data for v [m/s], maximum external dorsal extension moments during stance (DEmoment) and tibiotalar range of motion during mid stance (MS) and terminal stance (TS) were obtained. Functional evaluation was performed using clinical examination (e.g. calf circumference measurements) and patient-reported outcome measures (SF-36).
When compared to the healthy side, v of the injured side showed a significant reduction during MS (3 months: 48%, p < 0.001; 6 months: 13%; p = 0.040) and an significant increase during TS (3 months: 110%, p < 0.001; 6 months: 43%, p < 0.001; 12 months: 17%, p = 0.012). DEmoment of the fractured foot, showed a significant increase of 80% (p < 0.001) from three to 24 months after surgery, which correlated with v at three and six months after surgery (p < 0.05; v 3 months: r = 0.876, 6 months: r = 0.685; v 3 months: r = -0.554, 6 months r = -0.626).
v might serve as an indicator for foot mobility and function during the early healing phase after calcaneal fractures. As v can be obtained by pedobarography it is more readily accessible an less costly compared to foot function obtained by marker based gait analysis.
跟骨骨折是最常见的足部损伤之一，有时术后会出现多种并发症。足部活动受限是主要的功能障碍之一，在长期康复过程中常常持续存在。因此，从早期开始定量监测跟骨骨折后足的生物力学移动性对于实现最佳治疗效果非常重要。
评估距下关节内跟骨骨折患者在术后 3 至 24 个月的愈合过程中，足底压力速度（v）。
共对 20 例单侧跟骨骨折患者进行了研究，在术后 3、6、12 和 24 个月时，通过足底压力计和基于标记的步态分析进行了研究。获得了 v [m/s]、站立时最大外背伸力矩（DEmoment）和中足（MS）和终末足（TS）的距下关节活动范围的数据。功能评估采用临床检查（如小腿围测量）和患者报告的结果测量（SF-36）进行。
与健侧相比，MS 时患侧 v 显著降低（3 个月：48%，p<0.001；6 个月：13%，p=0.040），TS 时 v 显著增加（3 个月：110%，p<0.001；6 个月：43%，p<0.001；12 个月：17%，p=0.012）。骨折脚的 DEmoment 从术后 3 个月到 24 个月增加了 80%（p<0.001），与术后 3 个月和 6 个月的 v 相关（p<0.05；v 3 个月：r=0.876，6 个月：r=0.685；v 3 个月：r=-0.554，6 个月 r=-0.626）。
v 可能是跟骨骨折后早期愈合阶段足部移动性和功能的指标。由于 v 可以通过足底压力计获得，与基于标记的步态分析获得的足部功能相比，它更容易获得且成本更低。
