• Neuromodulation · Oct 2006

    Clinical application of peroneal nerve stimulator system using percutaneous intramuscular electrodes for correction of foot drop in hemiplegic patients.

    • Yoichi Shimada, Toshiki Matsunaga, Akiko Misawa, Shigeru Ando, Eiji Itoi, and Natsuo Konishi.
    • Rehabilitation Division, Akita University Hospital; Department of Orthopedic Surgery, Akita University School of Medicine; and Department of Orthopedic Surgery, Akita Rosai Hospital, Akita, Japan.
    • Neuromodulation. 2006 Oct 1;9(4):320-7.

    AbstractObjective.  To assess the orthotic effect of a functional electrical stimulation device (Akita Heel Sensor System; AHSS) in the treatment of hemiplegic gait with foot drop. Materials and Methods.  In the AHSS, a heel sensor is attached to a small plastic heel brace, and the peroneal nerve is stimulated via percutaneous intramuscular electrodes. During the swing phase of the hemiplegic gait, the common peroneal nerve is stimulated by the AHSS. Eight patients in chronic stages of hemiplegia participated in this study. Walking speeds and step cadences on a 10-m course were compared between walking with stimulation and walking without stimulation. Results.  Mean walking speed (± SD) was 0.50 ± 0.26 m/sec without stimulation and 0.64 ± 0.31 m/sec with stimulation. The mean percentage increase in walking speed with stimulation was 30.1%. Mean step cadence was 31 ± 7 steps/10 m without stimulation and 27 ± 7 steps/10 m with stimulation. By correcting foot drop, the AHSS significantly increased walking speed and decreased cadence (p < 0.05). Conclusion.  The AHSS can significantly improve walking in hemiplegic patients with foot drop.

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