Exoskeleton-based training improves walking independence in incomplete spinal cord injury patients: results from a randomized controlled trial.
Ángel Gil-Agudo, Álvaro Megía-García, José Luis Pons and 4 others
PMID 36964574WHAT IT FOUND
Exoskeleton walking training and conventional gait therapy both improved leg motor scores, with no difference between them.
Only the walking independence scale favoured the exoskeleton; the main motor outcome did not favour it.
Key findings
01On the Lower Extremity Motor Score (0-50), the exoskeleton group improved by 4.4 points and the control group by 3 points, but the groups did not differ.
02Walking speed increased 0.2 m/s in the exoskeleton group and 0.1 m/s in the control group; Timed Up and Go time decreased 13.2 seconds and 6.9 seconds; and 6-minute walking distance increased 68.8 meters and 48.1 meters, with no group differences.
03The WISCI-II walking independence scale (0-20) improved by 3.5 points in the exoskeleton group and 0.7 points in the control group, with a between-group difference.
STILL TO COME
How it was doneWhat they foundWhat it means for PTs
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What it does not show
The study planned 24 participants in each group but analysed 21, so the results are underpowered and null findings may reflect too few participants. There was no 6-month follow-up, so durability of improvement is unknown. The trial was single centre and used only one device, so applicability to other centres is limited. Participants knew which treatment they received, so a placebo effect cannot be ruled out. The exoskeleton group appeared younger and had a shorter time since injury, although these demographic differences were not statistically significant. Exoskeleton guidance was fixed at 100% and was not adapted to each patient's walking capacity. The study did not measure balance, upper-limb movement or EMG, so the reason for the WISCI-II difference is unclear. Both groups continued usual medications and rehabilitation, and both received additional walking treatment, so the contribution of any single component cannot be separated.
Declared interests
No explicit conflicts-of-interest declaration is provided; the paper says recruitment stopped when the time limit set by financial sponsorship was reached.
The easy way to misread this
Do not conclude that exoskeleton walking training is clearly superior for incomplete spinal cord injury. The main motor outcome did not favour the exoskeleton, and the only between-group improvement was on a walking independence scale in a small, unblinded trial.