Journal article

A new method for measuring AFO deformation, tibial and footwear movement in three dimensional gait analysis

Emily Ridgewell, Morgan Sangeux, Timothy Bach, Richard Baker

Gait and Posture | ELSEVIER IRELAND LTD | Published : 2013

Abstract

Solid ankle-foot orthoses (AFOs) are designed to immobilise the ankle but numerous studies have measured a considerable ankle range of motion (ROM) in AFO users. Measurement of ankle kinematics may be affected by soft-tissue artefact (STA) of the knee marker, deformation of the AFO or tibial movement within the AFO. A new model based on the Conventional Gait Model (CGM) was developed to calculate these effects. Although movement of the AFO within the shoe should not affect the measured ankle joint angle the model also allows an estimation of this movement. Seven children (13 limbs) with spastic diplegic cerebral palsy were assessed to present the benefits of the new model compared to the CGM..

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