A hip–knee–ankle exoskeleton emulator for studying gait assistance

GM Bryan, PW Franks, SC Klein… - … Journal of Robotics …, 2021 - journals.sagepub.com
Lower-limb exoskeletons could improve the mobility of people with disabilities, older adults,
workers, first responders, and military personnel. Despite recent advances, few products are …

Biarticular muscles in light of template models, experiments and robotics: a review

C Schumacher, M Sharbafi… - Journal of the Royal …, 2020 - royalsocietypublishing.org
Leg morphology is an important outcome of evolution. A remarkable morphological leg
feature is the existence of biarticular muscles that span adjacent joints. Diverse studies from …

ExoProsthetics: Assisting above-knee amputees with a lightweight powered hip exoskeleton

MK Ishmael, M Tran, T Lenzi - 2019 IEEE 16th International …, 2019 - ieeexplore.ieee.org
In this paper, we explore the effect of residual hip assistance in one above-knee amputee
subject using a novel lightweight powered hip exoskeleton. Differently from a powered …

Design, control, and evaluation of a robotic ankle-foot prosthesis emulator

AJ Anderson, YF Hudak, BC Muir… - IEEE Transactions on …, 2023 - ieeexplore.ieee.org
People with transtibial limb loss experience reduced mobility. Intelligent ankle-foot
prostheses have the potential to improve quality of life in people with limb loss, but there are …

Combining an Artificial Gastrocnemius and Powered Ankle Prosthesis: Effects on Transtibial Prosthesis User Gait

DM Ziemnicki, KA McDonald… - Journal of …, 2023 - asmedigitalcollection.asme.org
Walking is more difficult for transtibial prosthesis users, partly due to a lack of calf muscle
function. Powered ankle prostheses can partially restore calf muscle function, specifically …

Evaluation of a quasi-passive biarticular prosthesis to replicate gastrocnemius function in transtibial amputee gait

AM Willson, CA Richburg, AJ Anderson, BC Muir… - Journal of …, 2021 - Elsevier
Lower limb amputees experience gait impairments, in part due to limitations of prosthetic
limbs and the lack of a functioning biarticular gastrocnemius (GAS) muscle. Energy storing …

A robotic emulator for the systematic exploration of transtibial biarticular prosthesis designs

AJ Anderson, KA Gauthier, MS Varre… - Journal of …, 2024 - journals.sagepub.com
People with transtibial limb loss frequently experience suboptimal gait outcomes. This is
partly attributable to the absence of the biarticular gastrocnemius muscle, which plays a …

The motor and the brake of the trailing leg in human walking: transtibial amputation limits ankle–knee torque covariation

ME Toney-Bolger, YH Chang - Experimental Brain Research, 2023 - Springer
Lower-limb amputation limits inherent motor abundance in the locomotor system and
impairs walking mechanics. Able-bodied walkers vary ankle torque to adjust step-to-step leg …

Development and evaluation of a prosthetic ankle emulator with an artificial soleus and gastrocnemius

DM Ziemnicki, JM Caputo… - Journal of Medical …, 2021 - asmedigitalcollection.asme.org
In individuals with transtibial limb loss, a contributing factor to mobility-related challenges is
the disruption of biological calf muscle function due to transection of the soleus and …

Restoration of bilateral motor coordination from preserved agonist-antagonist coupling in amputation musculature

T Shu, SS Huang, C Shallal, HM Herr - Journal of neuroengineering and …, 2021 - Springer
Background Neuroprosthetic devices controlled by persons with standard limb amputation
often lack the dexterity of the physiological limb due to limitations of both the user's ability to …