Dislocations with intervertebral disc prosthesis: two case reports

Aunoble, S.; Donkersloot, Peter; Huec, J C Le

doi:10.1007/s00586-004-0687-3

Cited by 22 publications

(9 citation statements)

References 7 publications

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“…Constraints to lateral bending and axial rotation are provided by the saddle-shaped articulations. Unconstrained prostheses in the lumbar spine have been shown to be associated with rotational instability [1,10,23,24]. This problem has been analyzed biomechanically.…”

Section: Discussionmentioning

confidence: 99%

Local and global subaxial cervical spine biomechanics after single-level fusion or cervical arthroplasty

et al. 2009

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An experimental in vitro biomechanical study was conducted on human cadaveric spines to evaluate the motion segment (C4-C5) and global subaxial cervical spine motion after placement of a cervical arthroplasty device (Altia TDI TM ,Amedica, Salt Lake City, UT) as compared to both the intact spine and a single-level fusion. Six specimens (C2-C7) were tested in flexion/extension, lateral bending, and axial rotation under a ± 1.5 Nm moment with a 100 N axial follower load. Following the intact spine was tested; the cervical arthroplasty device was implanted at C4-C5 and tested. Then, a fusion using lateral mass fixation and an anterior plate was simulated and tested. Stiffness and range of motion (ROM) data were calculated. The ROM of the C4-C5 motion segment with the arthroplasty device was similar to that of the intact spine in flexion/extension and slightly less in lateral bending and rotation, while the fusion construct allowed significantly less motion in all directions. The fusion construct caused broader effects of increasing motion in the remaining segments of the subaxial cervical spine, whereas the TDI did not alter the adjacent and remote motion segments. The fusion construct was also far stiffer in all motion planes than the intact motion segment and the TDI, while the artificial disc treated level was slightly stiffer than the intact segment. The Altia TDI allows for a magnitude of motion similar to that of the intact spine at the treated and adjacent levels in the in vitro setting.

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Section: Discussionmentioning

confidence: 99%

Local and global subaxial cervical spine biomechanics after single-level fusion or cervical arthroplasty

et al. 2009

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“…Displacement occurred in series 2 at both test centres but only in Manchester was displacement severe enough to warrant removal for the reasons stated. Disc displacement due to placement of the disc too far anteriorly has been reported with the PRODISC [ 1 ]. The high incidence of disc displacement in this series (5 of 13) is thought to be associated with an anterior transperitoneal approach and more extensive removal of the annulus rather than malposition.…”

Section: Discussionmentioning

confidence: 99%

Vascular complications of prosthetic inter-vertebral discs

et al. 2006

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Five consecutive cases of prosthetic inter-vertebral disc displacement with severe vascular complications on revisional surgery are described. The objective of this case report is to warn spinal surgeons that major vascular complications are likely with anterior displacement of inter-vertebral discs. We have not been able to find a previous report on vascular complications associated with anterior displacement of prosthetic inter-vertebral discs. In all five patients the prosthetic disc had eroded into the bifurcation of the inferior vena cava and the left common iliac vein. In three cases the aortic bifurcation was also involved. The fibrosis was so severe that dissecting out the arteries and veins to provide access to the relevant disc proved impossible. Formal division of the left common iliac vein and artery with subsequent repair was our solution. Anterior inter-vertebral disc displacement was associated with severe vascular injury. Preventing anterior disc displacement is essential in disc design. In the event of anterior displacement, disc removal should be planned with a Vascular Surgeon.

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“…Zielsetzung war die Untersuchung, inwieweit eine alleinige dorsale Spondylodese bei einliegender Bandscheibenprothese eine ausreichende Mobilitätseinschränkung erzielt und somit eine Behandlungsoption bei Versagen der BSP (Fehllage, drohender Dislokation) statt des Austauschs der Bandscheibenprothese darstellt, zumal der ventrale Revisionseingriff mit höheren Risiken (Gefäß-und Nervenverletzungen) behaftet ist [10][11][12][13].…”

Section: Biomechanical Analysis Of Lumbar Spine After Implantation Ofunclassified

Biomechanische Analyse der Lendenwirbelsäule nach Implantation einer Bandscheibenendoprothese sowie ergänzender Spondylodese als Komplikationsmanagement

et al. 2009

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Dislocations with intervertebral disc prosthesis: two case reports

Cited by 22 publications

References 7 publications

Local and global subaxial cervical spine biomechanics after single-level fusion or cervical arthroplasty

Local and global subaxial cervical spine biomechanics after single-level fusion or cervical arthroplasty

Vascular complications of prosthetic inter-vertebral discs

Biomechanische Analyse der Lendenwirbelsäule nach Implantation einer Bandscheibenendoprothese sowie ergänzender Spondylodese als Komplikationsmanagement

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