Robot-assisted therapy for long-term upper-limb impairment after stroke.

Area of Science:

• Neurology
• Rehabilitation Medicine
• Biomedical Engineering

Background:

• Stroke survivors often experience long-term upper-limb deficits, necessitating effective rehabilitative therapies.
• Developing advanced therapeutic approaches is crucial for improving functional recovery after stroke.

Purpose of the Study:

• To evaluate the efficacy of robot-assisted therapy in patients with chronic upper-limb impairment after stroke.
• To compare robot-assisted therapy against intensive comparison therapy and usual care.

Main Methods:

• A multicenter, randomized controlled trial with 127 participants with moderate-to-severe upper-limb impairment.
• Participants were assigned to robot-assisted therapy, intensive comparison therapy, or usual care for 36 sessions over 12 weeks.
• Primary outcome: change in Fugl-Meyer Assessment score at 12 weeks; secondary outcomes: Wolf Motor Function Test and Stroke Impact Scale scores.

Main Results:

• Robot-assisted therapy did not significantly improve Fugl-Meyer scores at 12 weeks compared to usual care or intensive therapy.
• Significant improvements were observed in the Stroke Impact Scale for robot-assisted therapy versus usual care at 12 weeks.
• At 36 weeks, robot-assisted therapy significantly improved Fugl-Meyer scores and Wolf Motor Function Test times compared to usual care.

Conclusions:

• Robot-assisted therapy did not demonstrate significant short-term motor function improvement at 12 weeks post-stroke.
• Robot-assisted therapy showed significant long-term benefits over usual care at 36 weeks, particularly for motor function and task performance.
• Robot-assisted therapy is a viable option for long-term stroke rehabilitation, especially when compared to standard care.