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RISS 인기검색어
- 검색키워드
- 저자 : 문수정(S. J. Moon) (검색결과 2 건)
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생체 역학적 분석에 의한 Compression Hip Screw의 디자인 요소에 대한 평가
문수정(S. J. Moon),이희성(H. S. Lee),권순영(S. Y. Kwon),이성재(S. J. Lee),안세영(S. Y. Ahn),이훈(H Lee) 한국정밀공학회 2004 한국정밀공학회 학술발표대회 논문집 Vol.2004 No.10월
At present, CHS(Compression Hip Screw) is one of the best prosthesis for the intertrochanteric fracture. There is nothing to evaluate the CHS itself with the finite element analysis and mechanical tests. They have same ways of the experimental test of the ASTM standards. The purpose of this study is to evaluate the existing CHS and the new CHS which have transformational design factors with finite element analysis and mechanical tests. The mechanical tests are divided into compression tests and fatigue test for evaluating the failure load, strength and fatigue life. This finite element method is same as the experimental test of the ASTM standards. Under 300N of compression load at the lag screw head. There are less differences between Group (5H, basic type) and GroupⅡ which has 8 screw holes. However, there are lots of big differences between GroupⅠ and GroupⅢ which is reinforced about thickness of the neck range. Moreover, the comparison of GroupⅢ and GroupⅣ shows similar tendency of the comparison of Group and GroupⅡ. The GroupⅣ is reinforced the neck range from GroupⅡ. After the experimental tests and the finite element analysis, the most effective design factor of the compression hip screws is the reinforcement of the thickness, even though, there are lots of design factors. Moreover, to unite the lag screw with the plate and to analyze by static analysis, the result of this method can be used with experimental test or instead of it.
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요추부 척추관 협착증 치료를 위한 극돌기간 삽입술의 3차원 분석을 통한 생체역학적 효과 분석
이희성(H. S. Lee),신규철(K. C. Shin),문수정(S. J. Moon),정태곤(T. G. Jung),이권용(K. Y. Lee),이성재(S. J. Lee) 한국정밀공학회 2004 한국정밀공학회 학술발표대회 논문집 Vol.2004 No.10월
As many humans age, degenerative lumbar spinal stenosis (DLSS) becomes a major cause of lower limb discomfort and disability. By surgical treatment method of DLSS, the existing surgical treatment methods using internal fixation have showed degeneration changes of an adjacent vertebrae and loss of lumbar spine lordosis-kyphosis due to eliminating a motion. For solving the problems of internal fixation, a novel interspinous spacer has been developed to treat DLSS by surgical treatment method. In this study, we evaluated the biomechanical effects of the interspinous spacer on the kinematics of the porcine lumbar spine before and after insertion of the implant. For this purpose, a device that is capable of measuring 3-D motions were built based on direct linear transformation (DLT) algorithm written with MATLAB program. Results showed that in extension, a change of the mean angle between the intact and the implanted specimens at L4-L5 was 1.87 degree difference and the implant reduced the extension range of motion of the L4-L5 (p<0.05). But the range of motion in flexion, axial rotation and lateral bending at the adjacent segments was not statistically affected by the implant. In conclusion, we thought that interspinous spacer may have remedical value for DLSS by flexing human lumbar spine.
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