Customizable Cooperative Multi-joint Control to Enhance Walking Mobility After Stroke
This is a device study that will evaluate the effect of an implanted stimulator on improving walking in stroke survivors. There are two phases in the study: 1) Screening - this phase determines if the individual is a good candidate to receive an implanted system, 2) Implantation, controller development, and evaluation - this phase includes installing the device and setting the individual up for home use, creating advanced controllers for walking and evaluating the effect of the device over several months.
• At least 6-months post stroke
• Age 21 to 75 years old
• Able to ambulate, but does not require the assistance of more than one person
• Walk slower than 0.8m/s during a 10m walk test
• Lower extremity Fugl-Meyer Motor Assessment (FMA) \<= 20
• Reduced peak hip, knee and/or ankle range of motion during stance or swing phases
• Modified Ashworth Scale (MAS) \<= 2 at the above joints during passive flexion and extension
• Innervated and excitable lower extremity and trunk musculature
• Appropriate body habitus (height and weight within acceptable limits as determined by study physician)
• Adequate social support and stability
• Willingness to comply with follow-up procedures
• Neurologically stable as determined by a physician