Metal Cementless Prosthesis for Vertebral Body Replacement of Metastatic Malignant Disease of the Cervical Spine

Solini, A; Orsini, Gabriele; Broggi, Silvio

doi:10.1097/00002517-198912000-00008

Cited by 16 publications

(6 citation statements)

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“…Solini et al [37] proposed an implant and it was used for metastatic malignant disease of cervical spine (C3-C7) region on sixteen patients. This implant is made up of high-density polyethylene (HDPE) pad placed between to metal parts.…”

Section: Total Disc Replacementmentioning

confidence: 99%

Biomechanics of spinal implants—a review

Jain

Rana

Biswas

et al. 2020

Biomed. Phys. Eng. Express

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Spinal instrumentations have been classified as rigid fixation, total disc replacement and dynamic stabilization system for treatment of various spinal disorders. The efficacy and biomechanical suitability of any spinal implant can be measured through in vitro, in vivo experiments and numerical techniques. With the advancement in technology finite element models are making an important contribution to understand the complex structure of spinal components along with allied functionality, designing and application of spinal instrumentations at preliminary design stage. This paper aimed to review the past and recent studies to describe the biomechanical aspects of various spinal implants. The literatures were grouped and reviewed in accordance to instrumentation category and their functionality in the spinal column at respective locations.

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Section: Total Disc Replacementmentioning

confidence: 99%

Biomechanics of spinal implants—a review

Jain

Rana

Biswas

et al. 2020

Biomed. Phys. Eng. Express

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“…During the past few years several of these cages have been demonstrated to be effective; 14,23,35,39 however, after corpectomy the implantation of the currently available nonexpandable cages is often demanding. Adjusting the cages to the endplates and to the height of the defect is sometimes complicated because the cages are only commercially available in predefined endplate angles and heights, resulting in the need to trim the cage intraoperatively.…”

mentioning

confidence: 99%

Biomechanical comparison of expandable cages for vertebral body replacement in the cervical spine

Kandziora¹,

Pflugmacher²,

Schaefer³

et al. 2003

Journal of Neurosurgery: Spine

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OMMON causes for the destruction of the cervical spine are fractures, tumors, and infections. 9,14,15,18,29 When cervical spine surgery is necessary because of spine instability, neurological deterioration, intractable pain, and failure of conservative treatment, allogenous or autogenous bone grafts such as rib, 41 fibula, 9,26,32 tibia, 1,37 and iliac crest 4,9 have been used to reconstruct the anterior column. These commonly performed bone grafting techniques may produce a number of well-known problems related to donor-site morbidity, 9,30 nonunion, 9,28,38 or fatigue failure. 41 Biomechanical problems, such as the low compression stiffness of the grafts 41 or the insufficient anchorage of the grafts to the vertebral endplates, sometimes have resulted in graft collapse and dislocation. 2,28,33 In attempts to solve these problems, cervical spine cages for VB replacement have been developed.Object. Recently, expandable cages for vertebral body replacement in the cervical spine have been developed. The purpose of this study was to compare the biomechanical properties of expandable cages with those of a tricortical iliac crest graft and a nonexpandable cage.Methods. Forty human cervical spines (C3-5) were tested in flexion, extension, axial rotation, and lateral bending. First all motion segments were evaluated intact. After corpectomy of C-4 the spines were divided into five groups of eight and the following stabilization techniques were used: 1) autologous iliac crest bone graft; 2) mesh titanium cage; 3) anterior distraction device; 4) Synex-C titanium; and 5) Synex-C PEEK. Additionally, anterior plating and anterior plating plus posterior screw/rod fixation were applied. Stiffness, range of motion, and neutral and elastic zones were determined.In comparison with the intact motion segment all implants significantly increased stiffness in flexion and bending, but decreased stiffness in extension. There were no biomechanical differences between the nonexpandable and expandable cages. Furthermore, there were no biomechanical differences between the tricortical iliac crest graft and the cages, except for Synex-C in rotation. Additional anterior plating significantly increased biomechanical stiffness in all test modes; particularly in rotation mode, combined anterior-posterior stabilization increased stiffness by up to 102% compared with anterior plating alone.Conclusions. In comparison to a tricortical iliac crest bone graft and a nonexpandable cage, expandable cages have no biomechanical advantages. Due to the low extension and rotational stiffness, none of the implants can be recommended as a stand-alone device. Additional anterior plating increased biomechanical stability adequately. Therefore, additional posterior stabilization should only be considered in cases of severe rotational instability of the cervical spine. KEY WORDS • cervical spine • biomechanics • bone graft • cage • expandable cage • plate • screw/rod systemC 91 Abbreviations used in this paper: ADD = Anterior Distraction Device; CSLP = Cervical S...

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“…Über verschiedene Implantate und Materialien für den Wirbelkörperersatz herrscht in der Literatur keine Einigkeit. So werden Polymethylmetacrylat, kohlenstofffaserverstärktes Polysulfon, Keramik, Metall und autogene oder kryokonservierte allogene Knochentransplantate beschrieben (Ono und Tada 1975, Griss 1987, Burri et al 1989, Solini et al 1989, Sundaresan 1990, Schütte et al 1992, Cooper et al 1993, Errico und Cooper 1993, Hosono et al 1995, Hollowell et al 1996, Sundaresan et al 1996, Harrington 1997).…”

Section: Diskussionunclassified

“…1988, Burri et at. 1989, Manabe et al 1989, Solini et al 1989, Cooper et at. 1993, Hosono et al 1995.…”

Section: Introductionunclassified

“…Zur Frage des Wirbelkörperersatzmaterials herrscht in der Literatur keine Einigkeit. Anwendung finden autologer und homologer Knochen, verschiedene Zementformen, Metall, Keramiken, Titan und Kunststoffe in Kombination mit Zement oder Spongiosa (Ono und Kada 1975, Griss 1987, Burri et al 1989, Solini et at. 1989, Sundaresan et al 1990, Schulte et al 1992, Cooper et al 1993, Errico und Cooper 1993, Hosono et al 1995, Krödel et.…”

Section: Introductionunclassified

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