创伤性足下垂畸形进行Ilizarov外固定架治疗后的足底压力分析

Dynamic analysis of plantar pressure in patients with posttraumatic foot-drop deformity with Ilizarov treatment

目的研究创伤性足下垂患者进行Ilizarov外固定架治疗后的足底压力分布情况,为患者的手术治疗和康复提供有参考价值的生物力学结果。方法选取30名接受Ilizarov外固定架治疗的创伤性足下垂成人患者作为实验组,同时以30名同年龄健康人作为对照组,通过比较实验组和对照组足底各分区的峰值压强(peak pressure,PP),触地面积(contact area,CA)和压强-时间积分(pressure-time integral,PTI)等指标评估行走状态下术后患者的足底压力变化情况。结果与对照组相比,患足在足趾区域的PP,CA和PTI降低,在第五跖骨头、足跟外侧区域的PP,CA和PTI升高。结论创伤性足下垂畸形患者进行Ilizarov外固定架治疗术后的足底压力尚未恢复正常,前足外侧区域有应力过载风险,临床中还需长时间的康复治疗来恢复正常的足底压力分布。

Objective To investigate plantar pressure distributions in patients with posttraumatic foot-drop deformity with Il-izarov treatment, so as to provide biomechanical data of such patients for surgery and rehabilitation. Methods Thirty adult patients with posttraumatic foot-drop deformity who underwent Ilizarov treatment were designated as the experimental group, while another 30 healthy individuals with the same age were selected as the control group. Changes in the distribution of plantar pressure at walking stance were evaluated by comparing the peak pressure （PP） , the contact area （ CA） , the pressure-time integral（PTI） in both groups. Results Compared with those of the control group, the affected feet in the experimental group displayed lower PP, CA and PTI in the toe area, while on the other hand higher PP, CA and PTI were shown in the 5the metatarsal and lateral heel zone. Conclusion Plantar pressure distribution was still abnormal after Ilizarov treatment in the patients with posttraumatic foot-drop deformity. In lateral forefoot there was still overload risk in such patients. For this reason, a long-term rehabilitation treatment was required for full recovery of nor-mal plantar pressure distribution.