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  • Title: Safety and immediate effects of Hybrid Assistive Limb in children with cerebral palsy: A pilot study.
    Author: Nakagawa S, Mutsuzaki H, Mataki Y, Endo Y, Matsuda M, Yoshikawa K, Kamada H, Iwasaki N, Yamazaki M.
    Journal: Brain Dev; 2020 Feb; 42(2):140-147. PubMed ID: 31704189.
    Abstract:
    PURPOSE: Early intervention is effective for developing motor ability and preventing contractures and deformities in patients with cerebral palsy (CP). Gait training using the newly developed Hybrid Assistive Limb (HAL) shows promise as an intervention to prevent deterioration in walking ability and deformities in pediatric CP patients. The purpose of this pilot study was to examine the safety and immediate effects on walking ability after gait training using the HAL in pediatric CP patients. METHODS: Nineteen patients (six females, 13 males; mean age 8.5 years; mean height 120.5 cm; mean weight 23.2 kg) were enrolled. The Gross Motor Functional Classification Scale level was I in two patients, II in two, III in eight, and IV in seven. The HAL was used for a single session of gait training. The primary outcome was safety of the HAL for use in pediatric CP patients. The secondary outcome was the immediate effect after gait training with HAL, evaluated by passive range of motion (ROM) and gait parameters, including gait speed (m/s), step length (cm), and cadence (step/min). RESULTS: All 19 patients were able to carry out the gait training without any severe adverse events. Significant improvements were observed for mean internal/external rotation and abduction angles of the hip joint, and ankle dorsiflexion angles (n = 19). Significant improvements were observed for mean gait speed and step length based on expansion of the hip flexion-extension range (n = 11). CONCLUSION: Gait training using the HAL is safe and can produce immediate improvements in ROM and walking ability in pediatric patients with CP.
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