Temporal characteristics of foot rollover of amputee walking gait when using an Energy Storage and Return prosthesis.

Background: Energy Storage and Return (ESAR) prosthetic feet provide improved walking when compared with previous designs. However, it may not mimic the unimpaired smooth and progressive movement of the foot on the floor (foot rollover).

Objective: To characterize the temporal foot rollover of participants with unilateral transtibial amputation using an ESAR prosthetic foot.

Gait event detection accuracy: Effects of amputee gait pattern, terrain and algorithm.

Several kinematic-based algorithms have shown accuracy for gait event detection in unimpaired and pathological gait. However, their validation in subjects with lower limb amputation while walking on different terrains is still limited. The aim of this study was to evaluate the accuracy of three kinematic-based algorithms: Coordinate-Based Algorithm (CBA), Velocity-Based Algorithm (VBA) and High-Pass Filtered Algorithms (HPA) for detection of gait events in subjects with unilateral transtibial amputation walking on different terrains.