CAJ | 학술논문

目的：探讨股骨远端肿瘤型骨缺损，不同比例骨缺损的生物力学研究。方法：1例股骨远端患者,术前行64排螺旋CT扫描，建立股骨缺损5cm、10cm、15cm骨缺损的复合假体三维有限元模型，最后利用有限元分析软件ABAQUS6.9对该模型进行生物力学分析。结果：三组模型应力均未达到屈服应力，5cm骨缺损模型最大应力为2.1Mpa，最大位移为0.04mm。10cm骨缺损模型最大应力为5.8Mpa，最大位移为0.14mm。15cm骨缺损模型最大应力为11.07Mpa，最大位移为0.19mm。但其峰值均低于骨水泥疲劳强度。结论：骨水泥+锁定钢板治疗股骨远端骨肿瘤不会引起股骨应力分布的明显改变。随着缺损范围的增大，引起填充骨水泥的位移增大，不利于骨折愈合。
목적：탐토고골원단종류형골결손，불동비례골결손적생물역학연구。방법：1례고골원단환자,술전행64배라선CT소묘，건립고골결손5cm、10cm、15cm골결손적복합가체삼유유한원모형，최후이용유한원분석연건ABAQUS6.9대해모형진행생물역학분석。결과：삼조모형응력균미체도굴복응력，5cm골결손모형최대응력위2.1Mpa，최대위이위0.04mm。10cm골결손모형최대응력위5.8Mpa，최대위이위0.14mm。15cm골결손모형최대응력위11.07Mpa，최대위이위0.19mm。단기봉치균저우골수니피로강도。결론：골수니+쇄정강판치료고골원단골종류불회인기고골응력분포적명현개변。수착결손범위적증대，인기전충골수니적위이증대，불리우골절유합。
Objective:This study was to investigate the biomechanical factors of proxi-mal femur in different proportion femur defect. Methods: A volunteers left image data was obtained by spiral CT tomography. Then, Three-dimensional finite element bone defect models were established 5cm,10cm,15cm,based on CT images using simpleware 5.0 software. we established the three dimensional finite element model of these materials with software ABAOUS 6.9 software and carried out finite element analysis to the mode1 in biomechanics. Results: Stresses of all models do not exceed yield strength. 5cm bone defect the maximum principal stress is 2.1Mpa, The maximum displacement is 0.04mm, 10cm bone defect the maximum principal stress is 5.8Mpa, The maximum displacement is 0.14 mm, 15 cm bone defect the maximum principal stress is 11.07Mpa, The maximum displacement is 0.19mm. which not exceeds the fatigue strength of bone cement. Conclusion: The stress distribution of the femur didn' t change significantly after treating dismal femur patients with cemented and locking plate, with bone defect extensive of increase displacement, and against fracture healing.