Effect of Different Prosthetic Feet on the Kinematic Using Advanced Gait Analysis: Trans-Tibial Amputee Gait Perspective

Abstract

Objectives: To evaluate the effect of different prosthetic feet on the kinematic of trans-tibial user using advance gait analysis.

Methodology: This Single blinded randomized crossover study recruited a sample of N=25 unilateral trans-tibial amputees who were 18-45 years old, using convenience sampling. Study was conducted at PIPOS, from August 2019 to January, 2020. Dynamic plus foot, Flex foot, Carbon Copy II, Seattle, & IC130 feet, Simi Motion Analysis Camera System & Simi Aktisys software were for data collection. SPSS Version 22 was utilized for data analysis & general linear model statistics calculated. P<0.05 was considered significant.

Results: Dynamic plus foot revealed significantly bigger stride length on amputated (p=0.038) and intact (p=0.041) side compared to other feet and greater Cadence and higher velocity was seen for dynamic plus foot. Though not significant, hip flexion at terminal swing was maximum for dynamic plus feet, knee flexion at terminal swing on amputated side was maximum with pre-data, knee flexion at mid swing was highest for amputated side using carbon copy foot II foot. Similarly, no significant difference was seen for Stance phase, Swing phase, Lateral trunk flexion at mid stance, forward lean of the trunk at mid stance and pelvic tilt of amputee while using all type of prosthetic feet.

Conclusion: Dynamic plus feet give a significantly higher stride length compared to trias, carbon copy, flex, and seattle foot and give a insignificant but higher cadence, and velocity. However, the kinematics of gait were not significantly different among different types of feet.

Key Words: Amputation, Gait parameters, Kinematics, Prosthetic feet, Trans-Tibial