D Yao1, E Jakubowitz2, K Tecante2, M Lahner3, S Ettinger4, L Claassen4, C Plaass4, C Stukenborg-Colsman4, K Daniilidis4. 1. Department of Orthopaedic Surgery, Hannover Medical School, Anna-von-Borries-Strasse 1-7, 30625, Hannover, Germany. Daiwei.Yao@diakovere.de. 2. Laboratory for Biomechanics and Biomaterials (LBB), Department of Orthopaedic Surgery, Hannover Medical School, Anna-von-Borries-Strasse 1-7, 30625, Hannover, Germany. 3. Department of Orthopaedic Surgery and Traumatology, University Hospital Bochum, Gudrunstrasse 56, 44791, Bochum, Germany. 4. Department of Orthopaedic Surgery, Hannover Medical School, Anna-von-Borries-Strasse 1-7, 30625, Hannover, Germany.
Abstract
OBJECTIVE: The objective was to obtain first insights into the kinematic and kinetic walking patterns resulting from an implanted functional electrical stimulation system in subjects with a drop foot caused by stroke. METHODS: Four subjects who experienced a stroke were chosen due to a comparatively long/short time after surgery and young/old at the stroke event were examined retrospectively with gait analysis. Kinematics and kinetics of normal walking were assessed in comparison with and without activated drop foot stimulation. RESULTS: In general, an improvement regarding spatiotemporal parameters as a result of the stimulation could be observed. Walking speed was increased by 45 % and stride length by 22 % after a mean usage of 7 (2-14) months, whereas both younger subjects improved significantly more. Dorsiflexion increased in all subjects on average from 1.3° to 11.6° during initial contact as well as from 11.3° to 17.0° during mid-swing and therefore implies an advantage of around 5.5 inch foot clearance. Pathologic elements like knee hyperextension during loading response and mid-stance, leg circumduction during swing or the increased hip flexion of the contralateral leg during mid-stance could be in general adjusted with stimulation. CONCLUSION: An implantable functional electrical stimulation system seems to be a promising treatment of drop feet following strokes. Further clinical investigations are necessary to confirm these first insights.
OBJECTIVE: The objective was to obtain first insights into the kinematic and kinetic walking patterns resulting from an implanted functional electrical stimulation system in subjects with a drop foot caused by stroke. METHODS: Four subjects who experienced a stroke were chosen due to a comparatively long/short time after surgery and young/old at the stroke event were examined retrospectively with gait analysis. Kinematics and kinetics of normal walking were assessed in comparison with and without activated drop foot stimulation. RESULTS: In general, an improvement regarding spatiotemporal parameters as a result of the stimulation could be observed. Walking speed was increased by 45 % and stride length by 22 % after a mean usage of 7 (2-14) months, whereas both younger subjects improved significantly more. Dorsiflexion increased in all subjects on average from 1.3° to 11.6° during initial contact as well as from 11.3° to 17.0° during mid-swing and therefore implies an advantage of around 5.5 inch foot clearance. Pathologic elements like knee hyperextension during loading response and mid-stance, leg circumduction during swing or the increased hip flexion of the contralateral leg during mid-stance could be in general adjusted with stimulation. CONCLUSION: An implantable functional electrical stimulation system seems to be a promising treatment of drop feet following strokes. Further clinical investigations are necessary to confirm these first insights.
Authors: Elaine L Miller; Laura Murray; Lorie Richards; Richard D Zorowitz; Tamilyn Bakas; Patricia Clark; Sandra A Billinger Journal: Stroke Date: 2010-09-02 Impact factor: 7.914
Authors: Michael W O'Dell; Kari Dunning; Patricia Kluding; Samuel S Wu; Jody Feld; Jivan Ginosian; Keith McBride Journal: PM R Date: 2014-01-09 Impact factor: 2.298
Authors: Klaus Daniel Martin; Witold Henryk Polanski; Anne-Kathrin Schulz; Michael Jöbges; Hansjoerg Hoff; Gabriele Schackert; Thomas Pinzer; Stephan B Sobottka Journal: J Neurosurg Date: 2015-07-24 Impact factor: 5.115