Did any of these subjects have spasticity? Without that information no one can tell whom this will work for? So, bad research.
Effects of a robot-assisted training of grasp and pronation/supination in chronic stroke: a pilot study
Olivier Lambercy
1,2*
, Ludovic Dovat
1
, Hong Yun
3
, Seng Kwee Wee
3
, Christopher WK Kuah
3
, Karen SG Chua
3
,
Roger Gassert
2
, Theodore E Milner
4
, Chee Leong Teo
1
and Etienne Burdet
5,1
Abstract
Background:
Rehabilitation of hand function is challenging, and only few studies have investigated robot-assisted
rehabilitation focusing on distal joints of the upper limb. This paper investigates the feasibility of using the
HapticKnob, a table-top end-effector device, for robot-assisted rehabilitation of grasping and forearm pronation/
supination, two important functions for activities of daily living involving the hand, and which are often impaired
in chronic stroke patients. It evaluates the effectiveness of this device for improving hand function and the transfer
of improvement to arm function.
Methods:
A single group of fifteen chronic stroke patients with impaired arm and hand functions (Fugl-Meyer
motor assessment scale (FM) 10-45/66) participated in a 6-week 3-hours/week rehabilitation program with the
HapticKnob. Outcome measures consisted primarily of the FM and Motricity Index (MI) and their respective
subsections related to distal and proximal arm function, and were assessed at the beginning, end of treatment and
in a 6-weeks follow-up.
Results:
Thirteen subjects successfully completed robot-assisted therapy, with significantly improved hand and arm
motor functions, demonstrated by an average 3.00 points increase on the FM and 4.55 on the MI at the
completion of the therapy (4.85 FM and 6.84 MI six weeks post-therapy). Improvements were observed both in
distal and proximal components of the clinical scales at the completion of the study (2.00 FM wrist/hand, 2.55 FM
shoulder/elbow, 2.23 MI hand and 4.23 MI shoulder/elbow). In addition, improvements in hand function were
observed, as measured by the Motor Assessment Scale, grip force, and a decrease in arm muscle spasticity. These
results were confirmed by motion data collected by the robot.
Conclusions:
The results of this study show the feasibility of this robot-assisted therapy with patients presenting a
large range of impairment levels. A significant homogeneous improvement in both hand and arm function was
observed, which was maintained 6 weeks after end of the therapy.
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