Powered Lower-Limb Prostheses
Robotic Prostheses for Transtibial and Transfemoral Amputees
The majority of commercially available prosthetic interventions for lower-limb amputees are energetically passive. However, lower-limb amputees tend to expend more energy and walk more slowly than individuals with intact joints, and also develop compensatory mechanisms for walking and other activities which increase the demand on their intact joints and muscles, leading to long-term musckuloskeletal health problems. Recent advancements in the requisite technology have facilitated the emergence of prostheses capable of generating power comparable to that generated by the intact limb for many activities of daily living.
We have shown preliminary results which suggest that prostheses with actively powered joints can enhance the mobility, stability, and even comfort of lower-limb amputees when performing certain activities of daily living. Click on the images or links below to learn more about these prostheses.
Activities of Daily Living: Powered Knee and Ankle Prosthesis
This video demonstrates some of the functionality in the Generation 3 prosthesis. A transfemoral test subject demonstrates sit-to-stand, and stand-to-sit transitions, variable cadence walking, and stair ascent and descent.
Activities of Daily Living: Powered Ankle Prosthesis
This video demonstrates some of the functionality in the Generation 3.1 powered ankle prosthesis. A transtibial amputee test subject demonstrates variable cadence walking and ground adaptive standing and sitting.