Biomechanical test of the general spinal pedicle screw-rod orthopaedics fixation system in the treatment of diseases related to spinal instability / 中国骨伤
China Journal of Orthopaedics and Traumatology
; (12): 574-577, 2008.
Article
in Chinese
| WPRIM (Western Pacific)
| ID: wpr-263765
Responsible library:
WPRO
ABSTRACT
<p><b>OBJECTIVE</b>To evaluate the biomechanical performance of the spinal universal fixation system(GSPS) in treating the diseases related to spinal instability.</p><p><b>METHODS</b>Four instable models and 4 fracture models were made of fresh pig's thoracolumbar specimens (T10-L3). Self-designed GSPS were used in the simulated operation. Axial loading test and torsion test were made. The stress-strain relation of the GSPS was observed. The extracting force of link bar from elastic jig was tested.</p><p><b>RESULTS</b>The strain value of each tested point changed linearly when the axial load changed from 0 to 600 N. There was linear relation between the torsion and the torsion angle. The latter was less than 6 degrees when the former reached 300 N x cm. The minimum extracting force of the link bar from the elastic jig was more than 3 300 N.</p><p><b>CONCLUSION</b>The GSPS has high energy and high elasticity on anti-axial and anti-torsion load. It is stable to use elastic link bar.</p>
Full text:
Available
Database:
WPRIM (Western Pacific)
Main subject:
Spinal Diseases
/
General Surgery
/
Biomechanical Phenomena
/
Bone Screws
/
Internal Fixators
/
Joint Instability
Limits:
Humans
Language:
Chinese
Journal:
China Journal of Orthopaedics and Traumatology
Year:
2008
Document type:
Article