Publication detail

Biomechanical Evaluation of the MACSTL Internal Fixator for Thoracic Spinal Stabilisation

VESELÝ, R. FLORIAN, Z. WENDSCHE, P. TOŠOVSKÝ, J.

Original Title

Biomechanical Evaluation of the MACSTL Internal Fixator for Thoracic Spinal Stabilisation

English Title

Biomechanical Evaluation of the MACSTL Internal Fixator for Thoracic Spinal Stabilisation

Type

journal article - other

Language

en

Original Abstract

Unstable fractures of the thoracic spine in humans represent a serious social and economic issue. They may lead to persistent consequences and chronic disease. The anatomical and biomechanical characteristics of the thoracic spine are different from all the other spinal parts due to its higher mobility. The vertebrae of the chest area are less mobile, conferring a higher degree of rigidity to the spine. To destabilize this relatively rigid system, a considerable force is necessary. The treatment of unstable spinal fractures is solely surgical. The decompression of the spinal canal with reposition and stabilisation of the fracture is indicated urgently. This intervention is performed mostly from the posterior approach in the first phase. However, the anterior spinal column is the structure responsible for the stability of the spine. Therefore, the recent advances in spine surgery focus on this area of expertise. For this reason, we carried out a bio-mechanical study aimed at assessing the effectiveness of two surgical tactics used. The study consisted of comparative experiments performed by computer-aided device on segments of pig cadavers (n = 5). The experiment involved a comparison of segments of the thoracic spine under the following conditions: an anatomically intact segment, a spine segment with an artificially created anterior instability, and a segment with an applied internal fixator. The experiment compared the mechanical characteristics of these segments. The experiment has demonstrated that after application of the internal fixator used for stabilisation of the injured anterior spinal column at defined pre-loading of 200 N, the stability of damaged spinal segment in torsion increased twofold. It was also verified that sufficient stability can be ensured using the Modular Anterior Construct System (MACSTL) implant for ventral stabilisation of thoracic spine unstable injuries. Endoscopic application of this implant represents an additional advantage of this surgical procedure.

English abstract

Unstable fractures of the thoracic spine in humans represent a serious social and economic issue. They may lead to persistent consequences and chronic disease. The anatomical and biomechanical characteristics of the thoracic spine are different from all the other spinal parts due to its higher mobility. The vertebrae of the chest area are less mobile, conferring a higher degree of rigidity to the spine. To destabilize this relatively rigid system, a considerable force is necessary. The treatment of unstable spinal fractures is solely surgical. The decompression of the spinal canal with reposition and stabilisation of the fracture is indicated urgently. This intervention is performed mostly from the posterior approach in the first phase. However, the anterior spinal column is the structure responsible for the stability of the spine. Therefore, the recent advances in spine surgery focus on this area of expertise. For this reason, we carried out a bio-mechanical study aimed at assessing the effectiveness of two surgical tactics used. The study consisted of comparative experiments performed by computer-aided device on segments of pig cadavers (n = 5). The experiment involved a comparison of segments of the thoracic spine under the following conditions: an anatomically intact segment, a spine segment with an artificially created anterior instability, and a segment with an applied internal fixator. The experiment compared the mechanical characteristics of these segments. The experiment has demonstrated that after application of the internal fixator used for stabilisation of the injured anterior spinal column at defined pre-loading of 200 N, the stability of damaged spinal segment in torsion increased twofold. It was also verified that sufficient stability can be ensured using the Modular Anterior Construct System (MACSTL) implant for ventral stabilisation of thoracic spine unstable injuries. Endoscopic application of this implant represents an additional advantage of this surgical procedure.

Keywords

Thoracic spine, unstable fractures, anterior approach, biomechanical study, swine, model

RIV year

2008

Released

15.03.2008

Publisher

University of Veterinary and Pharmaceutical Sciences in Brno

Location

Brno

ISBN

0001-7213

Periodical

ACTA VETERINARIA BRNO

Year of study

77

Number

1

State

CZ

Pages from

97

Pages to

102

Pages count

6

URL

Full text in the Digital Library

Documents

BibTex


@article{BUT48582,
  author="Radek {Veselý} and Zdeněk {Florian} and Peter {Wendsche} and Jiří {Tošovský}",
  title="Biomechanical Evaluation of the MACSTL Internal Fixator for Thoracic Spinal Stabilisation",
  annote="Unstable fractures of the thoracic spine in humans represent a serious social and economic
issue. They may lead to persistent consequences and chronic disease. The anatomical and
biomechanical characteristics of the thoracic spine are different from all the other spinal parts
due to its higher mobility. The vertebrae of the chest area are less mobile, conferring a higher
degree of rigidity to the spine. To destabilize this relatively rigid system, a considerable force is
necessary.
The treatment of unstable spinal fractures is solely surgical. The decompression of the spinal
canal with reposition and stabilisation of the fracture is indicated urgently. This intervention is
performed mostly from the posterior approach in the first phase. However, the anterior spinal
column is the structure responsible for the stability of the spine. Therefore, the recent advances
in spine surgery focus on this area of expertise. For this reason, we carried out a bio-mechanical
study aimed at assessing the effectiveness of two surgical tactics used. The study consisted of
comparative experiments performed by computer-aided device on segments of pig cadavers
(n = 5). The experiment involved a comparison of segments of the thoracic spine under the
following conditions: an anatomically intact segment, a spine segment with an artificially created
anterior instability, and a segment with an applied internal fixator. The experiment compared the
mechanical characteristics of these segments.
The experiment has demonstrated that after application of the internal fixator used for
stabilisation of the injured anterior spinal column at defined pre-loading of 200 N, the stability of
damaged spinal segment in torsion increased twofold. It was also verified that sufficient stability
can be ensured using the Modular Anterior Construct System (MACSTL) implant for ventral
stabilisation of thoracic spine unstable injuries. Endoscopic application of this implant represents
an additional advantage of this surgical procedure.",
  address="University of Veterinary and Pharmaceutical Sciences in Brno",
  chapter="48582",
  doi="10.2754/avb200877010097",
  institution="University of Veterinary and Pharmaceutical Sciences in Brno",
  journal="ACTA VETERINARIA BRNO",
  number="1",
  volume="77",
  year="2008",
  month="march",
  pages="97--102",
  publisher="University of Veterinary and Pharmaceutical Sciences in Brno",
  type="journal article - other"
}