Abstract:
OBJECTIVE:To examine the effects of functional knee bracing on the muscle-firing patterns about the chronic anterior cruciate ligament (ACL)-deficient knee in successful brace users. DESIGN:Cross-sectional comparative clinical trial. SETTING:Motion analysis laboratory. PARTICIPANTS:Ten active individuals with unilateral, isolated, chronic (>18mo postinjury), ACL-deficient knees who subjectively reported improved function with a functional knee bracing. INTERVENTION:Each subject completed 3 single-leg hop maneuvers on their ACL-deficient knee with and without their knee brace while surface electromyographic activity was recorded from the quadriceps, hamstring, and gastrocnemius muscles. MAIN OUTCOME MEASURES:Muscle onset latency. RESULTS:Brace use significantly delayed the average onset of vastus lateralis activation before landing (123+/-47ms vs 109+/-30ms, P<.001), though significant interindividual variations existed. Bracing significantly altered the onset latency in 1 or more muscles in 9 of 10 subjects. In 4 subjects, a favorable change in the firing pattern was seen, whereas only 1 subject exhibited an unfavorable change. Without bracing, 5 of the 10 subjects fired the hamstrings or gastrocnemius muscles first; with bracing, 7 of 10 fired these muscles first. CONCLUSIONS:Brace use in this population did not consistently result in more favorable muscle firing patterns during the single-leg hop maneuver. Interindividual responses to brace use indicate the need for further research to investigate the multiple strategies that may exist to stabilize the ACL-deficient knee. In the meantime, functional knee brace use among ACL-deficient patients remains empirical.
journal_name
Arch Phys Med Rehabiljournal_title
Archives of physical medicine and rehabilitationauthors
Smith J,Malanga GA,Yu B,An KNdoi
10.1053/s0003-9993(03)00280-6subject
Has Abstractpub_date
2003-11-01 00:00:00pages
1680-6issue
11eissn
0003-9993issn
1532-821Xpii
S0003-9993(03)00280-6journal_volume
84pub_type
杂志文章abstract:OBJECTIVE:To obtain information on long-term mortality risk and life expectancy after traumatic brain injury (TBI), to improve planning and for counseling patients and their families. In contrast to the literature for spinal cord injury and other disabilities, there have been few such reports for TBI. DESIGN:Records w...
journal_title:Archives of physical medicine and rehabilitation
pub_type: 杂志文章
doi:10.1016/s0003-9993(98)90177-0
更新日期:1998-09-01 00:00:00
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journal_title:Archives of physical medicine and rehabilitation
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journal_title:Archives of physical medicine and rehabilitation
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journal_title:Archives of physical medicine and rehabilitation
pub_type: 杂志文章
doi:10.1016/j.apmr.2005.09.021
更新日期:2006-02-01 00:00:00
abstract:OBJECTIVE:To examine the system of connections among traumatic brain injury (TBI) patient social functioning, family functioning, and caregiver depression and burden in Mexico. DESIGN:Cross-sectional survey. SETTING:A public medical facility. PARTICIPANTS:Mexican TBI patient-caregiver dyads (N=84) participated in th...
journal_title:Archives of physical medicine and rehabilitation
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更新日期:2013-02-01 00:00:00
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journal_title:Archives of physical medicine and rehabilitation
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doi:10.1016/j.apmr.2018.11.001
更新日期:2019-04-01 00:00:00
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journal_title:Archives of physical medicine and rehabilitation
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更新日期:1994-12-01 00:00:00
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journal_title:Archives of physical medicine and rehabilitation
pub_type: 杂志文章
doi:10.1016/j.apmr.2003.06.029
更新日期:2004-05-01 00:00:00
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journal_title:Archives of physical medicine and rehabilitation
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更新日期:2001-02-01 00:00:00
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更新日期:2018-10-01 00:00:00
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journal_title:Archives of physical medicine and rehabilitation
pub_type: 杂志文章
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更新日期:2016-11-01 00:00:00
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journal_title:Archives of physical medicine and rehabilitation
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doi:10.1016/j.apmr.2017.03.011
更新日期:2017-08-01 00:00:00
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journal_title:Archives of physical medicine and rehabilitation
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更新日期:2005-07-01 00:00:00
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journal_title:Archives of physical medicine and rehabilitation
pub_type: 杂志文章,多中心研究,随机对照试验
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更新日期:2015-05-01 00:00:00
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更新日期:2016-06-01 00:00:00
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journal_title:Archives of physical medicine and rehabilitation
pub_type: 杂志文章
doi:10.1016/j.apmr.2014.11.008
更新日期:2015-08-01 00:00:00
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journal_title:Archives of physical medicine and rehabilitation
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更新日期:2016-10-01 00:00:00
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pub_type: 杂志文章,随机对照试验
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journal_title:Archives of physical medicine and rehabilitation
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journal_title:Archives of physical medicine and rehabilitation
pub_type: 杂志文章
doi:
更新日期:1988-03-01 00:00:00
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更新日期:2009-11-01 00:00:00
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journal_title:Archives of physical medicine and rehabilitation
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更新日期:2012-08-01 00:00:00
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更新日期:2020-08-01 00:00:00
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journal_title:Archives of physical medicine and rehabilitation
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