Biomechanical studies of an artificial disc implant in the human cadaveric spine

Patrick W Hitchon; Kurt Eichholz; Christopher Barry; Paige Rubenbauer; Aditya Ingalhalikar; Satoshi Nakamura; Kenneth Follett; Tae Hong Lim; James Torner

doi:10.3171/spi.2005.2.3.0339

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Biomechanical studies of an artificial disc implant in the human cadaveric spine

Journal article

Peer reviewed

Biomechanical studies of an artificial disc implant in the human cadaveric spine

Patrick W Hitchon, Kurt Eichholz, Christopher Barry, Paige Rubenbauer, Aditya Ingalhalikar, Satoshi Nakamura, Kenneth Follett, Tae Hong Lim and James Torner

Journal of neurosurgery. Spine, Vol.2(3), pp.339-343

03/2005

DOI: 10.3171/spi.2005.2.3.0339

PMID: 15796360

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Abstract

The authors compared the biomechanical performance of the human cadaveric spine implanted with a metallic ball-and-cup artificial disc at L4-5 with the spine's intact state and after anterior discectomy. Seven human L2-S1 cadaveric spines were mounted on a biomechanical testing frame. Pure moments of 0, 1.5, 3.0, 4.5, and 6.0 Nm were applied to the spine at L-2 in six degrees of motion (flexion, extension, right and left lateral bending, and right and left axial rotation). The spines were tested in the intact state as well as after anterior L4-5 discectomy. The Maverick disc was implanted in the discectomy defect, and load testing was repeated. The artificial disc created greater rigidity for the spine than was present after discectomy, and the spine performed biomechanically in a manner comparable with the intact state. The results indicate that in an in vitro setting, this model of artificial disc stabilizes the spine after discectomy, restoring motion comparable with that of the intact state.

Biomechanical Phenomena

Lumbar Vertebrae - surgery

Humans

Middle Aged

Range of Motion, Articular

Aged, 80 and over

Prostheses and Implants

Female

Male

Aged

Diskectomy - instrumentation

Cadaver

Details

Title: Subtitle: Biomechanical studies of an artificial disc implant in the human cadaveric spine
Creators: Patrick W Hitchon - Department of Neurosurgery, University of Iowa, Iowa City, Iowa 52242, USA. patrick-hitchon@uiowa.edu
Kurt Eichholz
Christopher Barry
Paige Rubenbauer
Aditya Ingalhalikar
Satoshi Nakamura
Kenneth Follett
Tae Hong Lim
James Torner
Resource Type: Journal article
Publication Details: Journal of neurosurgery. Spine, Vol.2(3), pp.339-343
DOI: 10.3171/spi.2005.2.3.0339
PMID: 15796360
NLM abbreviation: J Neurosurg Spine
ISSN: 1547-5654
eISSN: 1547-5646
Publisher: American Association of Neurological Surgeons; United States
Language: English
Date published: 03/2005
Academic Unit: Roy J. Carver Department of Biomedical Engineering; Epidemiology; Surgery; Injury Prevention Research Center; Neurosurgery
Record Identifier: 9983996191002771

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