표제지
목차
국문초록 9
ABSTRACT 11
I. 서론 14
II. 연구목적 18
III. 연구재료 및 방법 19
A. 3차원 대퇴골 유한요소 모델 구축 및 골절 구현 19
B. 다발성 유관나사 고정법 시 활용되는 유관나사 모델 설계 및 구축 20
C. 유관나사가 시술된 수술 후 모델의 구축 21
D. 구축된 대퇴골 경부 골절 시술 모델을 통한 생체역학적 영향 분석 23
IV. 연구 결과 27
A. 구현된 대퇴 경부 골절에서 다발성 유관나사 고정술 후 모델의 생체역학적 영향 및 수술적 안정성 분석 27
1. 유관나사에 나타나는 평균 응력 분석 27
2. 외측 피질골에 나타나는 평균 응력 분석 29
3. 대퇴 골두에 나타나는 최대 응력 분석 31
V. 고찰 33
VI. 결론 37
참고 문헌 38
Table 1. Materials properties were used in finite element models 23
Table 2. Mean stress at the cannulated screw at fracture site: differences from Type 2 28
Table 3. Mean stress at the tip of cannulated screw: differences from Type 2 29
Table 4. Mean stress at the lateral cortex: differences from Type 2 30
Table 5. Peak von-Mises stress at the femoral head: differences from Type 2 32
Figure 1. Types of hip fractures 16
Figure 2. Femoral neck fracture; (A) radiograph of the femoral neck fracture, (B) distribution of the number of femoral neck fracture... 16
Figure 3. Femoral neck fracture management devices; (A) hip arthroplasty, (B) compression hip screw, (C) multiple cannulated screw fixation 17
Figure 4. Bone density of femoral head 17
Figure 5. Ideal position of cannulated screw 17
Figure 6. Cannulated screw position in femoral head - Variables in this study 18
Figure 7. 3D femur finite element modeling 19
Figure 8. Making process of fracture model 20
Figure 9. Implants modeling used in this study 20
Figure 10. Cannulated screw position in femoral head; (A) anterior-posterior view, (B) axial view 21
Figure 11. Comparison models in axial view; (A) 6° tilted models, (B) 8° tilted models 22
Figure 12. Axial view of post-operative finite element models by changes of cannulated screw insertion position 22
Figure 13. Loading and boundary conditions of the finite element models used in this study 24
Figure 14. Contact conditions of the finite element models used in this study 24
Figure 15. Output variable(1); (A) peak von-Mises stress, (B) mean stress at the cannulated screw at fracture site 25
Figure 16. Output variable(2); (A) peak von-Mises stress, (B) mean stress at tip of cannulated screw 25
Figure 17. Output variable(3); (A) peak von-Mises stress, (B) mean stress at lateral cortex 25
Figure 18. Output variable(4); (A) peak von-Mises stress, (B) mean stress at femoral head 26
Figure 19. Mean stress at the cannulated screw at fracture site 28
Figure 20. Mean stress at the tip of cannulated screw 29
Figure 21. Mean stress at the lateral cortex 30
Figure 22. Peak von-Mises stress at the femoral head 31