Implementation of a unilateral hip flexion exosuit to aid paretic limb advancement during inpatient gait retraining for individuals post-stroke: a feasibility study.
Chih-Kang Chang, Christina Lee, Richard W Nuckols and 7 others
PMID 39026268WHAT IT FOUND
Physical therapists successfully used a hip exosuit to replace manual limb assistance for severely impaired stroke patients.
While it eliminated the need for hands-on limb support and increased walking distance in this group, speed changes were variable. The device did not improve outcomes for those already walking independently.
Key findings
01The exosuit eliminated the need for manual limb advancement assistance in sessions where patients previously required it.
02For patients requiring the most support, exosuit use significantly increased 2-minute walk distance but did not significantly change 10-meter walk speed.
03For patients requiring only balance support, exosuit use significantly increased 10-meter walk speed but did not significantly change 2-minute walk distance.
STILL TO COME
How it was doneWhat they foundWhat it means for PTs
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What it does not show
Small sample size (14 participants) limits generalizability. The study was a feasibility pilot, not a randomized controlled trial, so it cannot confirm efficacy. The 2.2 m increase in distance for the most impaired group was below the established minimal clinically important difference, though the authors argue this threshold may not apply to such severely impaired patients. Individual responses were highly variable, and the study could not determine which patient-specific factors predict benefit. No long-term follow-up was conducted to assess whether short-term orthotic effects led to lasting rehabilitation gains.
Declared interests
Funded by the National Institute on Disability, Independent Living, and Rehabilitation Research, National Institutes of Health, National Science Foundation, and Harvard University. No commercial conflicts of interest were reported.
The easy way to misread this
Do not assume the exosuit will improve walking speed for all patients. It showed no significant benefit for those who could already walk without limb assistance, and even for those who did benefit, the group-level changes in speed or distance were modest and variable.