Characterization of muscle recruitment during gait of bilateral transfemoral and through-knee persons with limb loss

• DOI: 10.3389/fbioe.2023.1128528
• Publication Date: 2023-04-04T05:34:54Z
• Authors: Alice M. Benton; Pouya Amiri; David P. Henson; Biranavan Sivapur...; Alison H. Mcgregor; Anthony M. J. Bull
• Keywords: Repeated measures design; Ground reaction force

Introduction: Due to loss in musculoskeletal capacity, there is an increased burden on the residual limbs of bilateral transfemoral and through-knee persons with limb loss. This reduced capacity associated cost walking that detrimental functionality. Compensatory gait strategies are adopted by this population. However, how these relate specific muscle recruitment not known. The primary aim study characterize during secondary assess whether measured kinematics can be actuated when endurance muscles if case, which alternative facilitate this. Methods: 3D data high-resolution magnetic resonance images were acquired from six Subject-specific anatomical models developed for each participant, a validated model was used quantify forces two conditions: normal (baseline) muscles, identified as functioning above "healthy" level at baseline, have magnitude maximum force (reduced simulation). To test hypothesis differences between baseline trials simulations muscular endurance, Bonferroni corrected two-way ANOVA repeated measures completed states. Results: analysis showed hip flexors experience relatively high activations gait. simulation found scenarios. First, 5 out 12 simulations, could reproduced capacity. Second, 7 cases where achieved, possible compensatory activation some similar functions (p ≤ 0.003). Discussion: Evidently, due ankle plantar flexors, imposes demand flexor group limb. highlights elevated population manifests recruitment. enhance functionality, it critical consider mechanical develop rehabilitation interventions accordingly.