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Meyns, P. (author), Kerkum, Y. L. (author), Brehm, M. A. (author), Becher, J. G. (author), Buizer, A. I. (author), Harlaar, J. (author)In children with cerebral palsy (CP), rigid ventral shell ankle-foot orthoses (vAFOs) are often prescribed to reduce excessive knee flexion in stance and lower the energy cost of walking (ECW). However, how vAFOs affect ECW is a complex issue, as vAFOs may have an impact on lower limb biomechanics, upper body movements, and balance. Besides,...journal article 2020
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Waterval, Niels F.J. (author), Nollet, Frans (author), Harlaar, J. (author), Brehm, Merel Anne (author)BACKGROUND: To improve gait, persons with calf muscle weakness can be provided with a dorsal leaf spring ankle foot orthosis (DLS-AFO). These AFOs can store energy during stance and return this energy during push-off, which, in turn, reduces walking energy cost. Simulations indicate that the effect of the DLS-AFO on walking energy cost and...journal article 2019
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Compensations in lower limb joint work during walking in response to unilateral calf muscle weaknessWaterval, Niels F.J. (author), Brehm, Merel Anne (author), Ploeger, Hilde E. (author), Nollet, Frans (author), Harlaar, J. (author)Background: Patients with calf muscle weakness due to neuromuscular disorders have a reduced ankle push-off work, which leads to increased energy dissipation at contralateral heel-strike. Consequently, compensatory positive work needs to be generated, which is mechanically less efficient. It is unknown whether neuromuscular disorder patients...journal article 2018