Dissertation > Excellent graduate degree dissertation topics show

Biomechanics Testing of the Adjacent Double Segments Thoracolumbar Fractures with the Spinal External Fixator

Author: YiGuoLiang
Tutor: SongXiZheng
School: Nanhua University
Course: Surgery
Keywords: Lumbar Fracture Adjacent Segments the Percutaneous Pedicle Screw the Spinal External Fixator Biomechanics
CLC: R687.3
Type: Master's thesis
Year: 2012
Downloads: 37
Quote: 0
Read: Download Dissertation

Abstract


Objective: To assess the biomechanical stability and range of motion (ROM)degeneration of upper adjacent vertebrae by biomechanics testing of the spinalexternal fixation for the adjacent double segments lumbar burst fractures.Methods: There were14vertebrae samples (T14~S1) from6fresh adult pigs. Eachof them had undergone a biomechanical test in the following order in order tominimize the inter-group interference.①Normal group, normal samples.②Fracturgroup, samples with fractures (L3, L4with burst fractures).③External fixation group,fracture samples with the spinal external fixation (L2, L5with the percutaneouspedicle screw).④Internal fixation group, fracture samples with the universal spinesystem. The biomechanical stability and upper vertebrae ROM of four groups aretested.Results:1. ROM in fracture group was significantly larger than that of normalgroup (p <0.05).2. ROM in the fixed groups was significantly less than that ofnormal and fracture groups (p <0.01). There’s no statistically significance changes ofSPI in both fixed group(sp>0.05).3. Comparisons of upper vertebrae ROM betweenexternal fixation group and normal group in the following. There was no statisticallysignificance between flexion and extensionin(p>0.05), but significantly differencebetween lateral bending and rotation (p <0.01). Comparisons of upper vertebraeROM between internal fixation group and normal group in the following. There wasstatistically significance among flexion, extension, lateral bending and rotation (p <0.01).Conclusion: Compared with traditional internal fixation, the biomechanical stabilityof the spinal external fixation in treating adjacent double segments of burst fracturewas equal. The reconstructive stability was satisfactory. Both two fixed methods increased ROM of adjacent upper vertebrae in lateral bending and rotation. But thespinal external fixation don’t lead to upper vertebrae ROM degeneration in flexionand extension, which was a better way in minimally invasive spinal surgery.

Related Dissertations

  1. The Analysis and Comparison of Adjacent Segment Degeneration of the Finite Element Caused by Three Posterior Lumbar Fusion Style,R687.3
  2. The Establishment and Preliminary Application of the Three-dimensional Finite Element Model of Ankle Joint,R687.3
  3. The Biomechanics and Imageology Preliminary Studies of Lumbar Intertransverse Absorbable Fusion Cage in the Process of Biodegradation,R687.3
  4. Development and Biomechanical Analysis of a Novel Extensible Pedicle Fixture,R687.3
  5. Experimental Biocompatibility and Biomechanical Evaluation of Silk Protein-coated Polypropylene Meshes,R318.01
  6. Ligament functional anatomy and biomechanics studies acromioclavicular,R687.3
  7. Gait Analysis and Dynamic Research on Biped Walking Robot,TP242
  8. The Development and Validation of a Finite Element Human Thorax Model for Automotive Impact Injury Studies,U467.14
  9. Repeated freezing and thawing biomechanical effects on human tendon allograft,R318.01
  10. Effect of Zoledronic Acid on Bone Mass and Biomechanics in Orchidectomized Rats,R580
  11. The Influence of Residual Stress on the Stress Distribution in Vessel Wall after the Deployment of Vessel Stent,R312
  12. Shandong Province 64kg men's boxers before Zhiquan Biomechanical analysis technique,G886.1
  13. Walking Biomechanical analysis and risk of injury,G821
  14. Application Research of the Evaluation of Occlusal Contacts in the Orthognathic Surgery Based on ABAQUS,R782
  15. Effect of Treadmill Exercise Training and Detraining on Bone Mineral Density, Body Composition and Biomechanics in Ovariectomized Rats and Correlation Analysis,R580
  16. The Effects of Treadmill Training and Detraing on Serum Sex Hormones, Bone Mineral Density, and Bone Structure in Ovariectomized Rats,R580
  17. Normal and degenerated nucleus pulposus cells viscoelasticity measurement,R681.53
  18. Finite Element Analysis of the Effects of Traction on the Biomechanical Behavior of the Degenerated Cervical Spine,R681.55
  19. Comparison of Effects and Biomechanical Study between DHS and LCP Fixation in Treatment of Intertrochanter Fracture of Femur,R687.3
  20. The Changes of Vertebral Bone Microcrack and Its Influence Factors in the Different Periods of Ovariectomized Rats,R580
  21. A New Way Based on Computational Fluid Dynamics Study the Asthma Mechanism by Using a Real Airway Model,R562.25

CLC: > Medicine, health > Surgery > Orthopaedic Surgery ( movement system diseases,orthopedic surgery ) > Orthopedic surgery and surgery > Bone surgery
© 2012 www.DissertationTopic.Net  Mobile