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Microprocessor-controlled knees (MPKs) do not typically utilize motors to power joint rotation, but they automatically adjust resistance or damping in the joint to improve swing- and/or stance-phase control as appropriate for the prosthesis user during gait. The Ossur Power Knee is the only commercially-available MPK that uses a motor to provide active power generation during walking and other activities. The purpose of this proposed investigation is to perform and compare biomechanical evaluations of the Power Knee and Ossur Rheo XC, a passive MPK, during walking and other activities by prosthesis users. Furthermore, mobility between male and female subjects will be compared to determine if there are differences in prosthetic knee usage on the basis of sex.
The purpose of this study is to evaluate the safety and effectiveness of the Transdermal Compress device in participants with Transfemoral Amputations.
The investigators do not yet know how a prosthetic socket with adjustable panels affects the performance of people with a lower limb amputation compared to a conventional prosthetic socket. The primary objective of this study is to compare an adjustable and conventional prosthetic socket and use this information to determine the optimal socket that would improve rehabilitation and function in people with lower limb amputation.
The purpose of this study is to investigate the relationship between thigh strength and walking ability and assess if using a blood pressure cuff on the leg improves strength and walking performance.
The purpose of this industry-initiated research study is to test that a powered microprocessor controlled knee improves metabolic function during walking in level and sloped conditions as compared to the subject's physician prescribed prosthesis.
This randomized controlled trial (n=25 enrolled, n=15 expected to complete) will 1) determine the feasibility of a 40-week limb-load biofeedback training intervention, 2) determine if there is an intervention signal of efficacy, and 3) identify functional movement priorities for people with transfemoral osseointegrated (OI) prostheses. A limb-load biofeedback training group (EXP (n=10)) will be compared to a standard of care attention-control group without limb-load biofeedback training (CTL (n=5)). Outcomes will be assessed at standard of care pre-habilitation end (Week 5), standard of care rehabilitation end (Week 24), and one year after OI Stage 2 surgery (Week 64).
The purpose of this study is to evaluate functional mobility, control, and user satisfaction from persons who have an amputation above the knee and have received osseo-integration (OI) and targeted muscle reinnervation (TMR) surgery, while walking with a powered knee and ankle prosthesis.
Despite recent advances in physical rehabilitation, Veterans with lower-limb amputation have poor long-term outcomes, including severely limited functional capacity and high levels of disability. Such poor outcomes are compounded by a lack of exercise participation over time, even with use of lower-limb prostheses. There is a clear need to advance current rehabilitation strategies to better promote sustained exercise following lower-limb amputation. To address this need, the study will determine the potential of a walking exercise self-management program to achieve sustained exercise participation. The 18-month intervention is focused on helping Veterans reduce habitual sedentary behavior through a remote exercise behavior-change intervention that includes multiple clinical disciplines, individualized exercise self-management training, and peer support. This innovative approach shifts the conventional rehabilitation paradigm to specifically target life-long exercise sustainability and remove an underlying cause of disability for Veterans with lower-limb amputation.
The objective of this research is to determine the clinical benefits of an innovative and lightweight powered leg controlled using our intent recognition framework in laboratory and community environments.