Prostheses designed for vertebral body replacement

Alıcı, Emin; Alku, O.Z.; Dost, S.

doi:10.1016/0021-9290(90)90027-z

Cited by 9 publications

(7 citation statements)

References 15 publications

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“…Bei der Verwendung von Knochentransplantaten, sind eine Reihe von Komplikationen bekannt, die oft im Zusammenhang mit einer Pseudoarthrose oder auch Implantatversagen durch Materialermüdung stehen [15]. Insbesondere nach strahlentherapeutischer Behandlung kann beispielsweise eine Verzögerung der Fusion bis hin zu einer Pseudoarthrose auftreten [2,6], was die zum Teil limitierten Einsatzmöglichkeiten von autologen Knochentransplantaten besonders bei Indikationen wie Wirbelsäulentumoren bzw. Wirbelsäulenmetastasen aufzeigt.…”

Section: Vorteile Expandierbarer Cagesunclassified

“…Heutzutage stellt der autologe trikortikale Beckenkammspan, trotz der häufig auftretenden Entnahmemorbidität am Beckenkamm, noch immer ein häufig verwendetes Implantat zum Wirbelkörperer-satz dar [2,6,13,14,20,21,28]. Zusätzli-che Probleme wie Pseudarthrose, Transplantatsinterung mit daraus resultierender Kyphose sowie ungewollte Transplantatwanderung mit Fehllage, führten zu einem vermehrten Einsatz von Cages als Wirbelkörperersatz an der thorakolumbalen Wirbelsäule [2,5,6,13,17].…”

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“…Zusätzli-che Probleme wie Pseudarthrose, Transplantatsinterung mit daraus resultierender Kyphose sowie ungewollte Transplantatwanderung mit Fehllage, führten zu einem vermehrten Einsatz von Cages als Wirbelkörperersatz an der thorakolumbalen Wirbelsäule [2,5,6,13,17]. Der Meshed Titanium Cage nach Harms (DePuy Acromed, Sulzbach, Germany) ist einer der bekanntesten nichtdistrahierbaren Cages, der als Wirbelkörperersatz zur Anwendung kommt [16].…”

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Expandierbare Cages als Wirbelk�rperersatz

Khodadadyan-Klostermann

Schaefer

Schleicher

et al. 2004

Chirurg

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Design variations of expandable cages for vertebral body replacement do not show any significant effect on the biomechanical results. There was no significant difference found, between the biomechanical properties of expandable and non-expandable cages. After corporectomy, isolated implantation of expandable cages plus anterior plating was not able to restore normal stability of the motion segment. As a consequence, isolated anterior stabilization using cages plus LCDCP should not be used for vertebral body replacement in the thoraco-lumbar spine.

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Section: Vorteile Expandierbarer Cagesunclassified

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Expandierbare Cages als Wirbelk�rperersatz

Khodadadyan-Klostermann

Schaefer

Schleicher

et al. 2004

Chirurg

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“…Complications, such as pseudarthrosis, graft collapse with kyphotic deformity and graft extrusion were reported [12,14,19]. As an alternative, cages for vertebral body replacement in the thoracolumbar spine are used more frequently [1,4,5,15,17,25]. One of the first widely used and most popular non-distractible VBR is the meshed titanium cage (DePuy AcroMed, Sulzbach, Germany), according to Lowery and Harms [21].…”

Section: Introductionmentioning

confidence: 99%

Biomechanical analysis of a new expandable vertebral body replacement combined with a new polyaxial antero-lateral plate and/or pedicle screws and rods

et al. 2011

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Purpose Restoration of the anterior spinal profile and regular load-bearing is the main goal treating anterior spinal defects in case of fracture. Over the past years, development and clinical usage of cages for vertebral body replacement have increased rapidly. For an enhanced stabilization of rotationally unstable fractures, additional antero-lateral implants are common. The purpose of this study was the evaluation of the biomechanical behaviour of a recently modified, in situ distractible vertebral body replacement (VBR) combined with a newly developed antero-lateral polyaxial plate and/or pedicle screws and rods using a full corpectomy model as fracture simulation. Methods Twelve human spinal specimens (Th12-L4) were tested in a six-degree-of-freedom spine tester applying pure moments of 7.5 Nm to evaluate the stiffness of three different test instrumentations using a total corpectomy L2 model: (1) VBR ? antero-lateral plate; (2) VBR, antero-lateral plate ? pedicle screws and rods and (3) VBR ? pedicle screws and rods. Results In the presented total corpectomy defect model, only the combined antero-posterior instrumentation (VBR, antero-lateral plate ? pedicle screws and rods) could achieve higher stiffness in all three-movement planes than the intact specimen. In axial rotation, neither isolated anterior instrumentation (VBR ? antero-lateral plate) nor isolated posterior instrumentation (VBR ? pedicle screws and rods) could stabilize the total corpectomy compared to the intact state. Conclusions For rotationally unstable vertebral body fractures, only combined antero-posterior instrumentation could significantly decrease the range of motion (ROM) in all motion planes compared to the intact state.

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“…Primary dorsal transpedicular stabilization with an internal fixator is recommended [2,3]. However, solely dorsal stabilization might lead to a secondary loss of stability, making combined anterior stabilization increasingly common [4]. Complications with iliac crest autogenous bone grafting for anterior fusion have been reported [5].…”

Section: Introductionmentioning

confidence: 99%

Secondary Collapse of an Expandable Cage After Vertebral Corpectomy

Sattler

Goesling²,

Busche³

et al. 2007

Eur J Trauma Emerg Surg

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Expandable vertebral body replacement systems have been increasingly used for anterior stabilization of spine. We report a secondary collapse of an expandable vertebral body replacement system. This specific complication has not been reported in the literature so far. The most obvious reason for failure was insufficient tightening of a locking screw. This paper emphasizes the importance of correct technical application.

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Prostheses designed for vertebral body replacement

Cited by 9 publications

References 15 publications

Expandierbare Cages als Wirbelk�rperersatz

Expandierbare Cages als Wirbelk�rperersatz

Biomechanical analysis of a new expandable vertebral body replacement combined with a new polyaxial antero-lateral plate and/or pedicle screws and rods

Secondary Collapse of an Expandable Cage After Vertebral Corpectomy

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