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Article: Paraspinal muscle activities of patients with scoliosis after spine fusion: An electromyographic study

TitleParaspinal muscle activities of patients with scoliosis after spine fusion: An electromyographic study
Authors
Issue Date2002
PublisherLippincott, Williams & Wilkins. The Journal's web site is located at http://www.spinejournal.com
Citation
Spine, 2002, v. 27 n. 11, p. 1180-1185 How to Cite?
AbstractStudy Design. This prospective study compared the electromyographic activities of paraspinal muscles between normal subjects and patients with scoliosis before and after spine fusion. Objective. To investigate the functional changes of paraspinal muscles before and after spine fusion using surface electromyography. Summary of Background Data. Idiopathic scoliosis is a common spine deformity. Surgical correction followed by spine fusion is the basic method of treatment, but the functional changes in paraspinal muscles after spine fusion still are unknown. Methods. For this study, 15 healthy subjects and 19 patients with idiopathic scoliosis were recruited. All 19 patients received posterior spine fusion from T2 to T5 to T12. The surface electromyography for normal subjects and for patients before and after spine fusion was recorded bilaterally along the thoracic and lumbar paraspinal muscles for different postures. Root mean square and median frequency values of electromyographic activities were used to compare results between normal subjects and patients with scoliosis before and after spine fusion. Results. Electromyographic activities showed significant differences between normal control subjects and patients with pre- or postoperative scoliosis. After spine fusion, electromyography showed lower root mean square activity in the thoracic region and higher root mean square activity in the lumbar region. Patients with preoperative scoliosis showed lower median frequency in the thoracic region and higher median frequency in the lumbar region than normal subjects and patients with postoperative scoliosis. The group with preoperative scoliosis showed the least symmetrical paraspinal muscle activity, followed by the postoperative and normal groups. Conclusions. Patients with scoliosis present unbalanced electromyographic activity in the paravertebral muscles, which is diminished by spine fusion, but does not return to the values found in normal subjects. The paraspinal muscles in the thoracic region showed lower activity after spine fusion, probably because of atrophy. Higher muscular activity was found in the lumbar region, which may lead to muscle hypertrophy.
Persistent Identifierhttp://hdl.handle.net/10722/170045
ISSN
2015 Impact Factor: 2.439
2015 SCImago Journal Rankings: 1.459
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLu, WWen_US
dc.contributor.authorHu, Yen_US
dc.contributor.authorLuk, KDKen_US
dc.contributor.authorCheung, KMCen_US
dc.contributor.authorLeong, JCYen_US
dc.date.accessioned2012-10-30T06:04:56Z-
dc.date.available2012-10-30T06:04:56Z-
dc.date.issued2002en_US
dc.identifier.citationSpine, 2002, v. 27 n. 11, p. 1180-1185en_US
dc.identifier.issn0362-2436en_US
dc.identifier.urihttp://hdl.handle.net/10722/170045-
dc.description.abstractStudy Design. This prospective study compared the electromyographic activities of paraspinal muscles between normal subjects and patients with scoliosis before and after spine fusion. Objective. To investigate the functional changes of paraspinal muscles before and after spine fusion using surface electromyography. Summary of Background Data. Idiopathic scoliosis is a common spine deformity. Surgical correction followed by spine fusion is the basic method of treatment, but the functional changes in paraspinal muscles after spine fusion still are unknown. Methods. For this study, 15 healthy subjects and 19 patients with idiopathic scoliosis were recruited. All 19 patients received posterior spine fusion from T2 to T5 to T12. The surface electromyography for normal subjects and for patients before and after spine fusion was recorded bilaterally along the thoracic and lumbar paraspinal muscles for different postures. Root mean square and median frequency values of electromyographic activities were used to compare results between normal subjects and patients with scoliosis before and after spine fusion. Results. Electromyographic activities showed significant differences between normal control subjects and patients with pre- or postoperative scoliosis. After spine fusion, electromyography showed lower root mean square activity in the thoracic region and higher root mean square activity in the lumbar region. Patients with preoperative scoliosis showed lower median frequency in the thoracic region and higher median frequency in the lumbar region than normal subjects and patients with postoperative scoliosis. The group with preoperative scoliosis showed the least symmetrical paraspinal muscle activity, followed by the postoperative and normal groups. Conclusions. Patients with scoliosis present unbalanced electromyographic activity in the paravertebral muscles, which is diminished by spine fusion, but does not return to the values found in normal subjects. The paraspinal muscles in the thoracic region showed lower activity after spine fusion, probably because of atrophy. Higher muscular activity was found in the lumbar region, which may lead to muscle hypertrophy.en_US
dc.languageengen_US
dc.publisherLippincott, Williams & Wilkins. The Journal's web site is located at http://www.spinejournal.comen_US
dc.relation.ispartofSpineen_US
dc.subject.meshAdolescenten_US
dc.subject.meshAdulten_US
dc.subject.meshAnalysis Of Varianceen_US
dc.subject.meshElectromyography - Methodsen_US
dc.subject.meshFemaleen_US
dc.subject.meshHumansen_US
dc.subject.meshLumbosacral Regionen_US
dc.subject.meshMaleen_US
dc.subject.meshMuscle, Skeletal - Pathology - Physiology - Physiopathologyen_US
dc.subject.meshMuscular Atrophy - Complications - Diagnosis - Physiopathologyen_US
dc.subject.meshPostureen_US
dc.subject.meshProspective Studiesen_US
dc.subject.meshReference Valuesen_US
dc.subject.meshScoliosis - Complications - Physiopathology - Surgeryen_US
dc.subject.meshSignal Processing, Computer-Assisteden_US
dc.subject.meshSpinal Fusionen_US
dc.subject.meshThoracic Vertebrae - Surgeryen_US
dc.titleParaspinal muscle activities of patients with scoliosis after spine fusion: An electromyographic studyen_US
dc.typeArticleen_US
dc.identifier.emailLu, WW:wwlu@hku.hken_US
dc.identifier.emailHu, Y:yhud@hku.hken_US
dc.identifier.emailLuk, KDK:hcm21000@hku.hken_US
dc.identifier.emailCheung, KMC:cheungmc@hku.hken_US
dc.identifier.authorityLu, WW=rp00411en_US
dc.identifier.authorityHu, Y=rp00432en_US
dc.identifier.authorityLuk, KDK=rp00333en_US
dc.identifier.authorityCheung, KMC=rp00387en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1097/00007632-200206010-00009en_US
dc.identifier.pmid12045515-
dc.identifier.scopuseid_2-s2.0-0036605814en_US
dc.identifier.hkuros71328-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0036605814&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume27en_US
dc.identifier.issue11en_US
dc.identifier.spage1180en_US
dc.identifier.epage1185en_US
dc.identifier.isiWOS:000176939800008-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridLu, WW=7404215221en_US
dc.identifier.scopusauthoridHu, Y=7407116091en_US
dc.identifier.scopusauthoridLuk, KDK=7201921573en_US
dc.identifier.scopusauthoridCheung, KMC=7402406754en_US
dc.identifier.scopusauthoridLeong, JCY=35560782200en_US

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