OTCohortJournal of neuroengineering and rehabilitation2020

Hand Extension Robot Orthosis (HERO) Grip Glove: enabling independence amongst persons with severe hand impairments after stroke.

Aaron Yurkewich, Illya J Kozak, Debbie Hebert and 2 others

PMID 32102668

WHAT IT FOUND

In one session, the HERO Grip Glove helped 11 stroke survivors with severe hand impairment extend fingers, grasp blocks, bottles, forks, and pens, but participants were only moderately satisfied and often needed arm or hand support.

Key findings

01The glove increased index finger extension by 147° and range of motion by 145° in the stroke participants.

02With the glove, all 11 participants transferred blocks, and all eight assessed manipulated a fork.

03Participants were more or less satisfied overall (3.3 out of 5), rated safety highest (4.6), and rated ease of donning lowest (2.3).

STILL TO COME

How it was doneWhat they foundWhat it means for OTs

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What it does not show

The study included only 11 stroke survivors selected by convenience, so it cannot show how most people with severe hand impairment after stroke would respond. It tested the glove during a single two-hour study session, so it cannot show long-term carryover into daily life. The glove was compared only with the same participants not wearing it, not with usual therapy, another device, or the earlier HERO Glove. Several participants needed forearm support, researcher support, or their unaffected hand to place objects, so the glove alone did not produce independent task performance for everyone. Donning required assistance and averaged 180 seconds, so it was not independent for many users. Some assessments were added after the first participants and were not used in the tables or statistical analyses, and some grip or pinch measurements were missing because of discomfort or equipment malfunction. The glove supplied 12.7 N grip and 11.0 N pinch on average, and the paper lists 15 N as the minimum grip specification. Pressure on fingers and force on fingers were not measured, and the glove could obstruct observation of joint hyperextension.

Declared interests

The supplied text reports funding from the Natural Sciences and Engineering Research Council of Canada, Canadian Partnership for Stroke Recovery, AGE-WELL, and IC-IMPACTS NCE. No other conflicts of interest are stated.

The easy way to misread this

Do not conclude that the HERO Grip Glove restores lasting hand function or independence. The study tested a single session in a small group, many needed arm support or another hand to place objects, and it did not compare long-term recovery or usual therapy.

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