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AuthorGothner, Martindc.contributor.author
Date of accession2016-03-14T13:41:23Zdc.date.accessioned
Available in OPARU since2016-03-14T13:41:23Zdc.date.available
Year of creation2006dc.date.created
AbstractA rupture of the anterior cruciate ligament (ACL) usually leads to sensorimotor impairment of the thigh muscles that stabilize the knee. The purpose of this study was to quantitatively assess reflex activity in the hamstrings after anterior tibial translation in 21 patients with isolated ACL ruptures. The patients were also divided into a group with "giving way" symptoms (non-copers, n = 12) and a group without "giving way" symptoms (copers, n = 9). While the patients were standing upright with 30 ° knee flexion, a force of 300 N was applied to the knee in order to induce posterior-anterior tibial translation. Hamstring activity was measured using surface electromyography (EMG). A linear potentiometer was placed on the tibial tuberosity and measured maximum tibial translation under functional conditions. In addition, knee laxity was assessed with a KT 1000 arthrometer under passive conditions. After ACL rupture, the short latency response (SLR) remained unchanged (p = 0.21), whereas the medium latency response (MLR) was significantly longer (p < 0.001). Whereas similar SLRs were measured for copers and non-copers, significantly longer MLRs were noted for both groups (p < 0.01). Significant differences between healthy and injured legs were noted after tibial translations under both functional and passive conditions (p < 0.001). Mechanical knee instability was found to be unchanged between copers and non-copers (KT 1000: p = 0.97; tibial translation: p = 0.31). These results show that ACL rupture is the cause of sensorimotor impairment that leads to "giving way" symptoms. An altered stretch reflex of the hamstring muscles (MLR) in the injured leg was noted. Mechanical instability, by contrast, does not influence subjective knee instability.dc.description.abstract
Languagededc.language.iso
PublisherUniversität Ulmdc.publisher
LicenseStandard (Fassung vom 03.05.2003)dc.rights
Link to license texthttps://oparu.uni-ulm.de/xmlui/license_v1dc.rights.uri
KeywordACL rupturedc.subject
KeywordGiving-waydc.subject
KeywordHamstringsdc.subject
KeywordRHCLdc.subject
Dewey Decimal GroupDDC 610 / Medicine & healthdc.subject.ddc
MeSHAnterior cruciate ligamentdc.subject.mesh
MeSHProprioceptiondc.subject.mesh
TitleDer Einfluss der Ruptur des vorderen Kreuzbandes auf die RHCL (= Reflex Hamstring Contraction Latency)dc.title
Resource typeDissertationdc.type
DOIhttp://dx.doi.org/10.18725/OPARU-835dc.identifier.doi
PPN1651362912dc.identifier.ppn
URNhttp://nbn-resolving.de/urn:nbn:de:bsz:289-vts-59496dc.identifier.urn
GNDKreuzbandrissdc.subject.gnd
GNDPropriozeptiondc.subject.gnd
FacultyMedizinische Fakultätuulm.affiliationGeneral
Date of activation2007-07-09T14:45:34Zuulm.freischaltungVTS
Peer reviewneinuulm.peerReview
Shelfmark print versionZ: J-H 11.533 ; W: W-H 9.739uulm.shelfmark
DCMI TypeTextuulm.typeDCMI
VTS ID5949uulm.vtsID
CategoryPublikationenuulm.category
Bibliographyuulmuulm.bibliographie


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