Weiland, Jan

[["dc.bibliographiccitation.firstpage","130"],["dc.bibliographiccitation.journal","Clinical Biomechanics"],["dc.bibliographiccitation.lastpage","139"],["dc.bibliographiccitation.volume","73"],["dc.contributor.author","Roch, Paul Jonathan"],["dc.contributor.author","Wagner, Markus"],["dc.contributor.author","Weiland, Jan"],["dc.contributor.author","Gezzi, Riccardo"],["dc.contributor.author","Spiering, Stefan"],["dc.contributor.author","Lehmann, Wolfgang"],["dc.contributor.author","Saul, Dominik"],["dc.contributor.author","Weiser, Lukas"],["dc.contributor.author","Viezens, Lennart"],["dc.contributor.author","Wachowski, Martin Michael"],["dc.date.accessioned","2020-06-15T07:08:09Z"],["dc.date.available","2020-06-15T07:08:09Z"],["dc.date.issued","2020"],["dc.description.abstract","Information about kinematics in different functional spinal units before and after total disc arthroplasties is necessary to improve prostheses and determine indications. There is little information about the nonstationary instantaneous helical axis of rotation under lateral bending in the cervical spine before and after total disc arthroplasty."],["dc.identifier.doi","10.1016/j.clinbiomech.2020.01.007"],["dc.identifier.pmid","31982810"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/66244"],["dc.language.iso","en"],["dc.relation.eissn","1879-1271"],["dc.relation.issn","0268-0033"],["dc.title","Total disc arthroplasties change the kinematics of functional spinal units during lateral bending"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","109608"],["dc.bibliographiccitation.journal","Journal of Biomechanics"],["dc.bibliographiccitation.volume","100"],["dc.contributor.author","Roch, Paul Jonathan"],["dc.contributor.author","Wagner, Markus"],["dc.contributor.author","Weiland, Jan"],["dc.contributor.author","Spiering, Stefan"],["dc.contributor.author","Lehmann, Wolfgang"],["dc.contributor.author","Saul, Dominik"],["dc.contributor.author","Weiser, Lukas"],["dc.contributor.author","Viezens, Lennart"],["dc.contributor.author","Wachowski, Martin Michael"],["dc.date.accessioned","2020-06-08T13:20:06Z"],["dc.date.available","2020-06-08T13:20:06Z"],["dc.date.issued","2020"],["dc.description.abstract","Total disc arthroplasty (TDA) increases the risk of adjacent segment disease (ASD). Kinematic analyses are necessary to compare the intact condition (IC) with alterations after TDA to develop better prostheses. A well-established 6D measuring apparatus (resolution < 2.4 μm; 400 positions/cycle) was used. Kinematics of the flexion and extension of 8 human cervical spine segments (cFSU) C3/C4 and C5/C6 (67.9 ± 13.2 y) were analyzed in the IC and after TDA (Bryan® Cervical Disc [B-TDA], Prestige LP® Cervical Disc [P-TDA]). The migration of the instantaneous helical axis (IHA) and the stiffness of the segments were calculated. Analyses demonstrated a stretched U-curved IHA migration in the sagittal plane. The IHA positions were significantly more cranial in cFSU C5/C6 than in C3/C4 in IC and after either TDA (IC: p < 0.001; B-TDA: p = 0.001; P-TDA: p = 0.045). In cFSU C3/C4 IHA positions shifted anteriocranially after either TDA (p < 0.001). In cFSU C5/C6, the IHA positions were significantly more anterocranial after B-TDA than in IC and after P-TDA (anterior: p < 0.001; cranial: p = 0.005). After B-TDA, the IHA migration path length was significantly longer in cFSU C3/C4 than in C5/C6 (p = 0.007) and longer than in IC in both cFSU (C3/C4: p = 0.047; C5/C6: p < 0.001). Stiffness was increased after both TDA. Various kinematic alterations were observed after both TDA. Increased translation and IHA position shifting after both TDA might indicate abnormal strain and a derogated benefit of TDA. These results imply the most abnormal strain after B-TDA. The lower cFSU might be more susceptible to alterations after TDA than the upper cFSU."],["dc.identifier.doi","10.1016/j.jbiomech.2020.109608"],["dc.identifier.pmid","31926589"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/66200"],["dc.language.iso","en"],["dc.relation.eissn","1873-2380"],["dc.relation.issn","0021-9290"],["dc.title","Total disc arthroplasties alter the characteristics of the instantaneous helical axis of the cervical functional spinal units C3/C4 and C5/C6 during flexion and extension in in vitro conditions"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1739"],["dc.bibliographiccitation.issue","10"],["dc.bibliographiccitation.journal","Journal of Biomechanics"],["dc.bibliographiccitation.lastpage","1745"],["dc.bibliographiccitation.volume","46"],["dc.contributor.author","Wachowski, Martin Michael"],["dc.contributor.author","Wagner, Markus"],["dc.contributor.author","Weiland, Jan"],["dc.contributor.author","Doerner, Jochen"],["dc.contributor.author","Raab, Bjoern Werner"],["dc.contributor.author","Dathe, Henning"],["dc.contributor.author","Gezzi, Riccardo"],["dc.contributor.author","Kubein-Meesenburg, Dietmar"],["dc.contributor.author","Naegerl, Hans"],["dc.date.accessioned","2018-11-07T09:23:36Z"],["dc.date.available","2018-11-07T09:23:36Z"],["dc.date.issued","2013"],["dc.description.abstract","We analyze how kinematic properties of C3/C4-segments are modified after total disc arthroplasty (TDA) with PRESTIGE (R) and BRYAN (R) Cervical Discs. The measurements were focused on small ranges of axial rotation (<0.8 degrees) in order to investigate physiologic rotations, which frequently occur in vivo. Eight human segments were stimulated by triangularly varying, axially directed torque. By using a 6D-measuring device with high resolution the response of segmental motion was characterised by the instantaneous helical axis (IHA). Position, direction, and migration rate of the IHA were measured before and after TDA. External parameters: constant axially directed pre-load, constant flexional/extensional and lateral-flexional pre-torque. The applied axial torque and IHA-direction did not run parallel. The IHA-direction was found to be rotated backwards and largely independent of the rotational angle, amount of axial pre-load, size of pre-torque, and TDA. In the intact segments pre-flexion/extension hardly influenced IHA-positions. After TDA, IHA-position was shifted backwards significantly (BRYAN-TDA: approximate to 8 mm; PRESTIGE-TDA: approximate to 6 mm) and in some segments laterally as well. Furthermore it was significantly shifted ventrally by pre-flexion and dorsally by pre-extension. The rate of lateral IHA-migration increased significantly after BRYAN-TDA during rightward or leftward rotations. In conclusion after the TDA the IHA-positions shifted backwards with significant increase in variability of the IHA-positions after the BRYAN-TDA more than in PRESTIGE-TDA. The TDA-procedure altered the segment kinematics considerably. TDA causes additional translations of the vertebrae, which superimpose the kinematics of the adjacent levels. The occurrence of adjacent level disease (ALD) is not excluded after the TDA for kinematical reasons. (C) 2013 Elsevier Ltd. All rights reserved."],["dc.identifier.doi","10.1016/j.jbiomech.2013.03.027"],["dc.identifier.isi","000321422400020"],["dc.identifier.pmid","23659912"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/29619"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Sci Ltd"],["dc.relation.issn","0021-9290"],["dc.title","Does total disc arthroplasty in C3/C4-segments change the kinematic features of axial rotation?"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","2425"],["dc.bibliographiccitation.issue","9"],["dc.bibliographiccitation.journal","European Spine Journal"],["dc.bibliographiccitation.lastpage","2433"],["dc.bibliographiccitation.volume","26"],["dc.contributor.author","Wachowski, Martin Michael"],["dc.contributor.author","Weiland, Jan"],["dc.contributor.author","Wagner, Markus"],["dc.contributor.author","Gezzi, Riccardo"],["dc.contributor.author","Kubein-Meesenburg, Dietmar"],["dc.contributor.author","Nägerl, Hans"],["dc.date.accessioned","2020-12-10T14:10:50Z"],["dc.date.available","2020-12-10T14:10:50Z"],["dc.date.issued","2017"],["dc.identifier.doi","10.1007/s00586-017-5073-z"],["dc.identifier.eissn","1432-0932"],["dc.identifier.issn","0940-6719"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/70892"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","Kinematics of cervical segments C5/C6 in axial rotation before and after total disc arthroplasty"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]