Impact of Powered Knee-Ankle Prosthesis on Low Back Muscle Mechanics in Transfemoral Amputees: A Case Series

摘要: Regular use of prostheses is critical for individuals with lower limb amputations to achieve everyday mobility, maintain physical and physiological health, a better quality life. Use influenced by numerous factors, prosthetic design playing role in facilitating mobility an amputee. Thus, can either promote biomechanically efficient or inefficient gait behavior. In addition increased energy expenditure, behavior expose user risk secondary musculoskeletal injuries may eventually lead rejection the prosthesis. Consequently, researchers have utilized technological advancements various fields improve devices customize them specific needs. One evolving technology powered components. Presently, active area research novel controllers components order enable users such be able reproduce biomechanics that are similar healthy limb. this case series, we studied impact using knee-ankle (PKA) on two transfemoral amputees who currently advanced microprocessor controlled knee (MPK). We outcomes pertaining kinematics, kinetics, metabolics, functional activities daily living compare efficacy between MPK PKA devices. Our results suggests allows participants walk kinematics normal patterns observed Additionally, it was reduced level asymmetry terms mechanical loading muscle activation, specifically low back spinae regions extremity muscles. Further, allowed greater range cadence than their predicate MPK, thus allowing safely ambulate variable environments dynamically control speed changes. Based appears there considerable potential provide safe above amputation.