Robotic prostheses have the potential to significantly improve mobility for people with lower-limb amputation. Humans exhibit complex responses to mechanical interactions with these devices, however, and computational models are not yet able to predict such responses meaningfully. Experiments therefore play a critical role in development, but have been limited by the use of product-like prototy...

ObjectiveThe energy cost of walking with a lower limb prosthesis is higher than able-bodied and depends on both cause level amputation. This increase might partly be related to problems balance control. In this study we investigated what extent can reduced by providing support through handrail or cane how amputation.DesignQuasi-experimental study.SettingRehabilitation gait laboratory.Participan...

Abstract In individuals with transtibial limb loss, a contributing factor to mobility-related challenges is the disruption of biological calf muscle function due transection soleus and gastrocnemius. Powered prosthetic ankles can restore primary mono-articular muscle, which contributes ankle plantarflexion. effect, powered acts like an artificial (AS). However, biarticular gastrocnemius connect...

Human-in-the-loop optimization allows for individualized device control based on measured human performance. This technique has been used to produce large reductions in energy expenditure during walking with exoskeletons but not yet applied prosthetic devices. In this series of case studies, we human-in-the-loop the an active ankle-foot prosthesis by participants unilateral transtibial amputati...

UNLABELLED Improvements in prosthesis design have facilitated participation in competitive running for persons with lower limb loss (AMP). PURPOSE The purpose of this study was to examine the physiological responses of AMP using a run-specific prosthesis (RP) versus a traditional prosthesis (P) and cross-referenced with nonamputee controls (C) matched by training status, age, gender, and body...

This article evaluates the design of a variable impedance prosthetic (VIPr) socket for a transtibial amputee using computeraided design andmanufacturing (CAD/CAM) processes. Compliant features are seamlessly integrated into a three-dimensional printed socket to achieve lower interface peak pressures over bony protuberances by using biomechanical data acquired through surface scanning and magnet...

Amputation of a major limb, and the subsequent return to movement with prosthesis, requires development compensatory strategies account for loss. Such strategies, over time, lead regional muscle atrophy hypertrophy through chronic under or overuse muscles compared uninjured individuals. The aim this study was quantify lower limb parameters persons transtibial transfemoral amputations using high...