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- W2076220726 abstract "Objective: To evaluate the forces and moments in knee-ankle-foot orthoses (KAFOs) during walking and the accuracy with which these loads can be measured using conventional gait analysis techniques. Design: Case series. Setting: Gait laboratory at a rehabilitation center. Participants: 4 patients with poliomyelitis wearing KAFOs. Interventions: KAFOs were instrumented with a load cell and walking data were concomitantly obtained using conventional gait analysis. Main Outcome Measures: Joint forces and moments, and gait parameters. Results: Loading at the knee joint was primarily comprised of knee flexion moments and axial compression forces. Peak knee flexion moments measured using the load cell were 39.2% (15.4%−55.0%) higher than those obtained using conventional gait analysis. Defining the knee axis anatomically, versus at the orthotic axis, tracking it dynamically, and compensating for the patient's corrected knee flexion contracture resulted in considerable improvements in the gait lab estimates of knee joint moments. Conclusions: Conventional gait analysis techniques substantially underestimate knee joint moments in the KAFOs of persons with poliomyelitis. Underestimation of orthotic loads could result in under-designed orthotic components and ultimately higher incidence of component failure in clinical applications." @default.
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- W2076220726 date "2008-10-01" @default.
- W2076220726 modified "2023-09-26" @default.
- W2076220726 title "Poster 32: Errors Associated With Gait Laboratory Measurements of Orthotic Knee Joint Moments" @default.
- W2076220726 doi "https://doi.org/10.1016/j.apmr.2008.08.059" @default.
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