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AuthorClessienne, Charlottedc.contributor.author
Date of accession2016-03-14T15:22:05Zdc.date.accessioned
Available in OPARU since2016-03-14T15:22:05Zdc.date.available
Year of creation2007dc.date.created
AbstractIntroduction: In lumbar total disc replacement (TDR), polyethylene (PE) wear may worsen outcome. One factor might be increased segmental lordosis following TDR with posterior component impingement. Methods: 56 patients with degenerative disc disease or postdiscectomy syndrome with a total of 66 ProDisc (Synthes Spine) TDRs (monosegmentally: L3/4: n = 2, L4/5: n = 13, L5/S1: n = 31; bisegmentally: L4-S1: n = 10) were assessed radiographically regarding posterior component impingement. All TDRs had a configuration of 6° angulation/10 mm PE-inlay. Segmental angulation was measured twice (6 week interval) on lateral standing X-rays (neutral/maximum extension) using the Spike method. Component impingement was assumed at segmental angulation of the fins of > 16°. Intra-observer variability was checked with t-test, Pearson correlation coefficient (PCC) and 95 %-confidence interval (95 %-CI). Results: The average segmental angulation of the TDR in neutral position was 9.9° (± 4.8°) and 9.9° (± 4.9°) at first and second measurement, and for maximum extension it was 11.3° (± 4.9°) and 11° (± 4.9°), respectively. Regarding angulation and extension, data showed no significant difference (t-test: p = 0.51 and p = 0.19) and PCC suggested near perfect agreement (0.99 and 0.85). 95 %-CI was ± 1.2° and ± 1.4°. Data interpretation was conducted using absolute measurements (AM) and 95 %-CI, suggesting an impingement > 16° (AM) and > 17,2° (95 %-CI) of segmental angulation. In neutral position, 11 % (AM) and 5 % (95 %-CI) of TDRs showed an impingement and in neutral position and/or maximum extension, this rate was 15 % (AM) and 9 % (95 %-CI). Impingement rate was higher at L4/5 and in bisegmental TDRs. 79 % (AM) and 32 % (95 %-CI) of the implants were mobile. Discussion: Posterior component impingement following TDR exists in a considerable amount of cases in this cohort. Regarding clinical consequences like PE-wear, further studies are needed to investigate the correlation between radiological and clinical findings.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
KeywordBandscheibenprothesedc.subject
KeywordPolyäthylen-Abriebdc.subject
KeywordRöntgenanalysedc.subject
Dewey Decimal GroupDDC 610 / Medicine & healthdc.subject.ddc
MeSHDiskectomydc.subject.mesh
MeSHIntervertebral disk. Radiographydc.subject.mesh
TitleDorsales Impingement nach lumbaler Bandscheibenprothetik - eine statische und dynamische Röntgenanalysedc.title
Resource typeDissertationdc.type
DOIhttp://dx.doi.org/10.18725/OPARU-1366dc.identifier.doi
URNhttp://nbn-resolving.de/urn:nbn:de:bsz:289-vts-62872dc.identifier.urn
GNDImpingement-Syndromdc.subject.gnd
GNDPolyethylenedc.subject.gnd
GNDRöntgendiagnostikdc.subject.gnd
FacultyMedizinische Fakultätuulm.affiliationGeneral
Date of activation2008-02-01T10:44:38Zuulm.freischaltungVTS
Peer reviewneinuulm.peerReview
Shelfmark print versionZ: J-H 11.736; W: W-H 9.936uulm.shelfmark
DCMI TypeTextuulm.typeDCMI
VTS ID6287uulm.vtsID
CategoryPublikationenuulm.category
Bibliographyuulmuulm.bibliographie


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