Post Stroke Ambulation Recovery Using Robotic Exoskeletons

Inclusion Criteria:

* Stroke survivors 3 - 8 months from a recent stroke.
* Age: 50 - 80 years
* Unilateral hemiparesis
* Medical clearance by the Medical Director
* Be able to physically fit into the exoskeleton device: Height between 60\" and 76\" and weight below 220 lbs
* Patient cognitive status and ability to communicate in English must be at a level consistent with that required to participate in standard motor rehabilitation (e.g. can follow directions).
* Adequate cognitive function to give informed consent, understand the training, instructions, use investigational devices and give adequate feedback.
* Have a joint range of motion within normal functional limits for ambulation.
* Have sufficient strength to use the hemiwalker, cane or walker (etc. assistive device) while wearing the RE.
* No history of injury or pathology to the unaffected limb.
* Have an appropriate walking speed as determined by the study staff.

Exclusion Criteria:

* Any medical issue that precludes full weight-bearing and ambulation (e.g. orthopedic injuries, pain, severe spasticity).
* Skin issues that would prevent wearing the device.
* Pre-existing condition that caused exercise intolerance (documented uncontrolled hypertension, coronary artery disease, cardiac arrhythmia, or congestive heart failure).
* Hospitalization for heart attack, heart surgery, or acute heart failure within 3 months of enrollment in the study.
* Uncontrolled seizure disorder, spasticity, or joint contracture that would interfere with walking.
* Neuromuscular, neurological, or orthopedic pathologies that interfere with neuromuscular function, ambulation, or limit the range of motion of the lower limbs.