Dissertation > Excellent graduate degree dissertation topics show

The Biomechanic Analysis of Instrumentation Growing Rods of Sliding Pedicle Screw System

Author: HouHanTao
Tutor: WangWenJun
School: Nanhua University
Course: Orthopaedic Surgery
Keywords: Instrumentation growing rods of sliding pedicle screw Scoliosis Biomechanics Stability
CLC: R687.3
Type: Master's thesis
Year: 2012
Downloads: 23
Quote: 0
Read: Download Dissertation


ObjectiveComparing the biomechanics in growing rod techniques of sliding pedicle screwsystem and the universal spine system(USS)to improve this system and provide theclinical theoretical basis in the future.MethodThis first part of this paper twelve fresh porcine thoracic spines containing6fnctional spinal unit (FSU) were divided into2groups randomly, sliding pediclescrew system group (normal attachment screws in the3rd,4th vertebra and slidingpedicle screws in1st,6th vertebra),universal spine system group (normal attachmentscrews in the1st,3rd,4th,6th vertebra).One implanted with the growing rodtechniques of sliding pedicle screw system and the other with USS.The range ofmotion of one to three vertebral flexion/extension,left/right lateral bending andleft/right axial rotations were tested.All the statistics were analyzed by SPSS18.0. Thesecond part using twelve fresh porcine thoracic spines containing3FSU to divide into2groups randomly, sliding pedicle screw system group (normal attachment screws inthe3rd vertebra and sliding pedicle screws in1st vertebra),universal spine systemgroup (normal attachment screws in the1st,3rd vertebra).One implanted with thegrowing rod techniques of sliding pedicle screw system and the other with USS.Thelimit load of vertebral flexion state and axial rotations state were tested. All thestatistics were analyzed by SPSS18.0.ResultThere is no significant change in the ROM after fixation both with the growingrod techniques of sliding pedicle screw system and the universal spine system.(p﹥0.05)The screw loosening occurs on flexion state at400N in sliding pedicle screw system group,while at1800N in universal spine system group.(p<0.05)The screw loosening occurs on axial rotations state at5degrees in sliding pediclescrew system group,while at10degrees in universal spine system group.(p<0.05)ConclusionThe growing rod techniques of sliding pedicle screw system can achieve thesame orthopedic effect and biomechanical stability.The limit loading of the sliding pedicle screw system is smaller than that ofUSS.It demonstrated that the sliding pedicle screw system has some deficiencieswhich needed to be further optimized in order to increase the strength of the fixation.

Related Dissertations

  1. Power System Dynamic Voltage Stability Simulation Study Based on Precise Integration Method,TM712
  2. Stability Analysis of Roller Compacted Concrete Gravity Dam Based on Time-history Method,TV642.2
  3. On Ohba’s Conjecture of One Class of Complete Multipartite Graphs,O157.5
  4. The Establishment and Preliminary Application of the Three-dimensional Finite Element Model of Ankle Joint,R687.3
  5. The Research of the Medium-sized and Small Property Insurance Companies’ Profitability Promotion Strategy in China,F842.3
  6. The Structure of the Solutions of Two-dimensional Simplified Euler Equations,O175.24
  7. Research on Global Existence of Slutions for Some Nonlinear Wave Equations,O175.29
  8. The research direction of lamp pumped laser,TN248
  9. To Promote the Healthy Development of the Stock Market Stability Tax System Conception,F812.42
  10. Analysis and Study of Abutment Stability in Concrete High Arch Dam by Three-Dimensional Nonlinear Finite Element Method,TV642.4
  11. Dynamics of an Ecological Stoichiometric Regrowth-Herbivore Model,O175
  12. Modeling and Stability Analysis of Networked Control System with Time-delay,TP273
  13. Research on the Absolute Stability for Lurie Control Systems with Time-delays,TP13
  14. Grey Model-Based Link Stability Prediction Routing Protocol for Ad Hoc Networks,TN929.5
  15. Fermentation Condition Optimization, Characteristics and Inhibition on Mango Anthrax of Antibiotic Substance Produced by Trichoderma Viride,S436.67
  16. Social Stability of Rural Culture Construction under the Perspective,G241
  17. The Preliminary Analysis of Genetic Transmission on Target Gene in Transgenic Tomato and Lettuce of Anti-caries,R781.1
  18. The Fuzzy Comprehensive Evaluation Method and Application Research of the Open-pit Slope Stability,TD824.7
  19. Architectural membrane modification and UV coating properties,TU561.6
  20. Synthesis of 2-methyl-4-methoxylaniline by Pt/C Catalytic Hydrogenation,TQ246.31
  21. Study on Preparation and Optical Properties of Color Liquid Crystalline Polymers Film,O753.2

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