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Implementation of a new Spasticity Evaluation Function for a Rehabilitation Robot


A. Brunschweiler

Semester/Bachelor Thesis, WS 03/04

Spasticity is defined as velocity-dependent increase in muscle tone in response to passive movement. Different biomechanical methods to measure spasticity by the Lokomat, a rehabilitation robot for incomplete paraplegic patients, have been evaluated. An approach similar to isokinetic dynamometry has been implemented. In contrast to an isokinetic movement, a continuously differentiable curvature is applied, which has been designed in analogy to the motions therapists perform. Evaluation of mechanical stiffness, i.e. Nm/, is performed. Torque components stemming from the Lokomat and the patientís passive legs are compensated to get a measure that can be compared between subjects. First measurements with healthy subjects and patients with spinal cord injury show promising results for using the method to quantify muscle tone. A further clinical study is needed to validate the method.


Type of Publication:

(13)Semester/Bachelor Thesis

R. Riener

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% Autogenerated BibTeX entry
@PhdThesis { Xxx:2004:IFA_2744
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