This study was aimed to evaluate the kinetics and kinematics of the foot and ankle using three-dimensional gait analysis in children with recurrent clubfoot treated with tibialis anterior tendon transfer (TATT). Three-dimensional gait analysis of 17 children with dynamic supination (24 feet; 12 males; mean age: 6.34 years) was performed pre- and post-TATT. Spatial, temporal and kinematic parameters, as well as the gait deviation index (GDI), were recorded for all patients. Moreover, to evaluate the severity of dynamic supination during walking, we also measured the angle between the plane of the foot and the X-axis during the swing phase (V-angle-S). The postoperative step length (38.95 ± 8.36 cm) and stride length (76.73 ± 15.92 cm) were significantly smaller than their preoperative values (40.68 ± 9.35 cm and 80.57 ± 17.51 cm; P = 0.0316 and P = 0.0028, respectively). The postoperative peak internal ankle rotation angle in the frontal plane (20.45° ± 14.44) was significantly lower than the preoperative value (25.93° ± 9.84; P = 0.029). The postoperative peak internal foot progression angle in the transverse plane (0.96° ± 5.83) was significantly lower than the preoperative value (4.34° ± 8.88; P = 0.026). However, both the peak ankle varus moment and GDI were not significantly different between the pre- and postoperative data. Postoperative V-angle-S values (28.55° ± 7.56) were reduced compared to their preoperative values (32.52° ± 6.53; P = 0.0094). TATT to the lateral cuneiform can correct dynamic supination in patients with a recurrent clubfoot; however, it has limited or no effects on hindfoot varus deformity. Level of evidence: Level III.

本研究旨在通过 3D 步态分析评估胫骨前肌腱移植治疗复发性马蹄足患儿的足部和踝部的动力学和运动学。（花边）。在 TATT 前后对 17 名动态旋后儿童（24 英尺；12 名男性；平均年龄：6.34 岁）进行了三维步态分析。记录所有患者的空间、时间和运动学参数，以及步态偏差指数 (GDI)。此外，为了评估行走过程中动态旋后的严重程度，我们还测量了摆动阶段脚平面与 X 轴之间的角度（V 角-S）。术后步长（38.95±8.36 cm）和步幅（76.73±15.92 cm）明显小于术前值（40.68±9.35 cm和80.57±17.51 cm；P =0.0316和P= 0.0028，分别）。额面术后踝关节内旋角峰值（20.45°±14.44）明显低于术前值（25.93°±9.84；P =0.029）。横向平面的术后足内进角峰值（0.96°±5.83）显着低于术前值（4.34°±8.88；P = 0.026）。然而，峰值踝内翻力矩和 GDI 在术前和术后数据之间没有显着差异。术后 V 角 S 值 (28.55° ± 7.56) 与术前值 (32.52° ± 6.53; P= 0.0094)。外侧楔骨 TATT 可以纠正复发性马蹄足患者的动态旋后；然而，它对后足内翻畸形的影响有限或没有影响。证据等级：III 级。