Abstract:
BACKGROUND:The limited range of motion during walking in children with spastic cerebral palsy (SCP) may be the result of altered mechanical characteristics of muscles and connective tissues around the knee joint. Measurement of static net knee moment-angle relation will provide insights into these alterations, for which instrumented hand-held dynamometry may be applied. The aims of this study were: (1) to test the measurement error of the estimated net knee moment-angle characteristics, (2) to determine the correlation between knee extension angle measurement at a standardized knee moment and popliteal angle from common physical examination and (3) to compare net knee moment-angle characteristics in SCP versus typically developing children. METHODS:With the child lying in sideward position, the knee was extended by moving the lower leg by a hand-held force transducer on a low friction cart. Force data were collected for a range of knee angles. Data were excluded when activity (EMG) levels of knee extensor and flexor muscles exceeded the EMG level during rest by more than two standard deviations. The net knee flexion moments were calculated from recorded force data and measured moment arm. Reliability for knee angles corresponding with 0.5, 1, 2, 3, and 4 Nm knee net flexion moments was assessed by standard error of measurements (SEM) and smallest detectable difference (SDD). RESULTS:For between day comparison, SEMs were about 5° and SDDs were below 14° for knee angles at 1-4 Nm net knee flexion moments. In SCP children, the knee angle measured at 4 Nm knee flexion moment was not related to the popliteal angle (r = 0.52). The slope at 4 Nm of the knee moment-angle curve in SCP children was significantly higher than that in typically developing children. CONCLUSIONS:The presented knee hand-held dynamometry allows assessment of net knee flexion moment-knee angle characteristics in typically developing and SCP children and can be used to identify clinically relevant changes as a result of treatment. Overall stiffness of structures that contribute to the net knee flexion moment at the knee (i.e. muscles, tendons, ligaments) is elevated in SCP children.
journal_name
J Neuroeng Rehabiljournal_title
Journal of neuroengineering and rehabilitationauthors
Haberfehlner H,Maas H,Harlaar J,Newsum IE,Becher JG,Buizer AI,Jaspers RTdoi
10.1186/s12984-015-0056-ysubject
Has Abstractpub_date
2015-08-15 00:00:00pages
67issn
1743-0003pii
10.1186/s12984-015-0056-yjournal_volume
12pub_type
杂志文章abstract:BACKGROUND:Although test-retest reliability of mean values of spatio-temporal gait parameters has been assessed for reliability while walking alone (i.e., single tasking), little is known about the test-retest reliability of stride time variability (STV) while performing an attention demanding-task (i.e., dual tasking)...
journal_title:Journal of neuroengineering and rehabilitation
pub_type: 杂志文章
doi:10.1186/1743-0003-8-37
更新日期:2011-07-11 00:00:00
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journal_title:Journal of neuroengineering and rehabilitation
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journal_title:Journal of neuroengineering and rehabilitation
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更新日期:2020-03-05 00:00:00
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journal_title:Journal of neuroengineering and rehabilitation
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journal_title:Journal of neuroengineering and rehabilitation
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更新日期:2011-08-03 00:00:00
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doi:10.1186/s12984-017-0265-7
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journal_title:Journal of neuroengineering and rehabilitation
pub_type: 杂志文章
doi:10.1186/1743-0003-9-60
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journal_title:Journal of neuroengineering and rehabilitation
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doi:10.1186/s12984-019-0551-7
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journal_title:Journal of neuroengineering and rehabilitation
pub_type: 杂志文章
doi:10.1186/s12984-018-0380-0
更新日期:2018-06-20 00:00:00
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journal_title:Journal of neuroengineering and rehabilitation
pub_type: 临床试验,杂志文章
doi:10.1186/1743-0003-4-32
更新日期:2007-08-21 00:00:00
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journal_title:Journal of neuroengineering and rehabilitation
pub_type: 杂志文章
doi:10.1186/s12984-019-0564-2
更新日期:2019-07-25 00:00:00
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journal_title:Journal of neuroengineering and rehabilitation
pub_type: 临床试验,杂志文章
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pub_type: 临床试验,杂志文章
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更新日期:2014-06-30 00:00:00
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journal_title:Journal of neuroengineering and rehabilitation
pub_type: 杂志文章
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更新日期:2013-04-15 00:00:00
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journal_title:Journal of neuroengineering and rehabilitation
pub_type: 杂志文章
doi:10.1186/1743-0003-4-45
更新日期:2007-11-29 00:00:00
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journal_title:Journal of neuroengineering and rehabilitation
pub_type: 杂志文章,评审
doi:10.1186/1743-0003-11-3
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journal_title:Journal of neuroengineering and rehabilitation
pub_type: 杂志文章
doi:10.1186/s12984-017-0302-6
更新日期:2017-09-06 00:00:00
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journal_title:Journal of neuroengineering and rehabilitation
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pub_type: 杂志文章,随机对照试验
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pub_type: 杂志文章,随机对照试验
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journal_title:Journal of neuroengineering and rehabilitation
pub_type: 杂志文章
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更新日期:2009-07-07 00:00:00
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journal_title:Journal of neuroengineering and rehabilitation
pub_type: 杂志文章
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更新日期:2018-02-05 00:00:00
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journal_title:Journal of neuroengineering and rehabilitation
pub_type: 临床试验,杂志文章
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更新日期:2018-03-22 00:00:00
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journal_title:Journal of neuroengineering and rehabilitation
pub_type: 杂志文章
doi:10.1186/s12984-019-0616-7
更新日期:2019-11-06 00:00:00
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journal_title:Journal of neuroengineering and rehabilitation
pub_type: 杂志文章
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更新日期:2020-11-23 00:00:00
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journal_title:Journal of neuroengineering and rehabilitation
pub_type: 临床试验,杂志文章
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更新日期:2019-11-27 00:00:00
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journal_title:Journal of neuroengineering and rehabilitation
pub_type: 杂志文章
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更新日期:2019-01-09 00:00:00
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journal_title:Journal of neuroengineering and rehabilitation
pub_type: 杂志文章
doi:10.1186/1743-0003-11-13
更新日期:2014-02-10 00:00:00
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journal_title:Journal of neuroengineering and rehabilitation
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