%0 Journal Article %1 Price1991 %A Price, R. %A Bjornson, K. F. %A Lehmann, J. F. %A McLaughlin, J. F. %A Hays, R. M. %D 1991 %J Dev Med Child Neurol %K Biomechanics; Cerebral Palsy; Child; Child, Preschool; Female; Humans; Male; Motor Neurons; Muscle Spasticity; Muscles; Neurologic Examination; Range of Motion, Articular; Reflex, Abnormal; Stretch; Signal Processing, Computer-Assisted %N 7 %P 585--595 %T Quantitative measurement of spasticity in children with cerebral palsy. %V 33 %X Spasticity was quantified in nine children with spastic diplegia, using a sinusoidal displacement of the foot at frequencies from 3 to 12Hz. Ankle-joint stiffness was separated into elastic (energy-storing) and viscous (energy-dissipating) components. 'Path length' was used to represent the variation in stiffness over this frequency range. Compared with 11 unaffected children, a significant difference in path lengths was demonstrated for the children with spasticity. An age-dependent effect was demonstrated when path lengths of unaffected children were compared with those of 10 unaffected adults. A modified path-length measure is proposed which minimizes age dependency, yet enables detection of spasticity. Passive stiffness properties of unaffected adults showed higher elastic stiffness, viscosity and friction than unaffected children. A method was developed to evade the need for temporary nerve blocks to calculate inerital properties of the foot in persons with spasticity.

@article{Price1991, abstract = {Spasticity was quantified in nine children with spastic diplegia, using a sinusoidal displacement of the foot at frequencies from 3 to 12Hz. Ankle-joint stiffness was separated into elastic (energy-storing) and viscous (energy-dissipating) components. 'Path length' was used to represent the variation in stiffness over this frequency range. Compared with 11 unaffected children, a significant difference in path lengths was demonstrated for the children with spasticity. An age-dependent effect was demonstrated when path lengths of unaffected children were compared with those of 10 unaffected adults. A modified path-length measure is proposed which minimizes age dependency, yet enables detection of spasticity. Passive stiffness properties of unaffected adults showed higher elastic stiffness, viscosity and friction than unaffected children. A method was developed to evade the need for temporary nerve blocks to calculate inerital properties of the foot in persons with spasticity.}, added-at = {2014-07-19T21:06:46.000+0200}, author = {Price, R. and Bjornson, K. F. and Lehmann, J. F. and McLaughlin, J. F. and Hays, R. M.}, biburl = {https://www.bibsonomy.org/bibtex/292b6bcd502cebd9a10337072975072af/ar0berts}, groups = {public}, interhash = {777831122a61d425dbc8b25bbd8b8b39}, intrahash = {92b6bcd502cebd9a10337072975072af}, journal = {Dev Med Child Neurol}, keywords = {Biomechanics; Cerebral Palsy; Child; Child, Preschool; Female; Humans; Male; Motor Neurons; Muscle Spasticity; Muscles; Neurologic Examination; Range of Motion, Articular; Reflex, Abnormal; Stretch; Signal Processing, Computer-Assisted}, month = Jul, number = 7, pages = {585--595}, pmid = {1879622}, timestamp = {2014-07-19T21:06:46.000+0200}, title = {Quantitative measurement of spasticity in children with cerebral palsy.}, username = {ar0berts}, volume = 33, year = 1991 }