Towards efficient motor imagery interventions after lower-limb amputation

Area of Science:

• Neuroscience
• Rehabilitation Medicine
• Kinesiology

Background:

• Motor imagery (MI) is established for central nervous system impairments.
• Research on MI efficacy post-amputation is limited, especially for lower-limb amputations.
• Previous studies focused on upper-limb amputations.

Purpose of the Study:

• To assess the effects of MI on locomotion recovery after unilateral lower-limb amputation.
• To compare MI training with neutral cognitive exercises in physical therapy.

Main Methods:

• 19 participants were divided into MI (n=9) and control (n=10) groups.
• Both groups received physical therapy; the MI group performed 10 min/day of locomotor MI training.
• Locomotion was assessed via 10m walking, Timed Up and Go Test, limb force, and walking assistance needs.

Main Results:

• MI showed an early positive impact on the 10m walking task (pre-prosthetic phase).
• MI group demonstrated greater performance in the Timed Up and Go Test (prosthetic phase).
• Fewer participants in the MI group required walking aids, and they had greater amputated limb force post-rehabilitation.

Conclusions:

• Motor imagery training positively impacts locomotion recovery in lower-limb amputees.
• MI should be integrated into physical therapy programs for individuals with lower-limb amputations.
• MI may enhance functional outcomes and reduce reliance on assistive devices.