Robotic exoskeleton-assisted gait training in patients with motor incomplete myelopathy

Abstract

Objectives: To assess the effect of gait training with robotic exoskeleton-assisted rehabilitation systems on gait parameters, balance, and overall disability in motor incomplete myelopathy. Design: Prospective pre-post study. Setting: Neurological rehabilitation unit in a tertiary university teaching hospital. Participants: Thirty-four motor incomplete myelopathy patients [22 males, mean age 36.7 y (12.7)] were included in this prospective, pre-post study. Twenty-two had nontraumatic etiology, and 17 had tetraplegia. American Spinal Injury Association impairment scale suggested 23 as C and 11 as American Spinal Injury Association impairment scale-D. The mean duration of the lesion was 333 days. Intervention: Twenty-four sessions of robotic gait training (1-h session, 5–6 sessions/wk) for 4–6 weeks. Outcome measures: Gait speed was assessed using a 10-m walk test-10MWT, endurance with a 2-minute walk test-2MWT and 6-minute walk test-6MWT, walking ability by Walking Index in Spinal Cord Injury-walking index for spinal cord injury II, functionality using Spinal cord Independence Measure-SCIM III, and balance by Timed-up-and-go (TUG) test. Results: At baseline, 20 patients were nonwalkers-NWB, and 14 were walkers-WB. The walking index for spinal cord injury II and SCIM III suggested significant improvement in both groups by the end of the study (P<0.05). Among the WB group, 10MWT, 2MWT, and TUG showed significant improvement (P=0.004, 0.02, and 0.01, respectively) with training. Patients in NWB group were able to perform 10MWT, 2MWT, 6MWT, and TUG by the end of the study. Conclusions: Gait training with robotic exoskeleton-assisted rehabilitation systems can lead to a significant improvement in gait endurance, speed, balance, and functional outcomes in individuals with incomplete myelopathy. The effect is more pronounced among already ambulatory patients.