http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
전창수(Chang Soo Chon),김한성(Han Sung Kim),심준성(June Sung Shim),김영호(Young Ho Kim) Korean Society for Precision Engineering 2005 한국정밀공학회지 Vol.22 No.10
In this study, two dimensional and three dimensional finite element models of lower first premolar were analyzed. The mandibular specimen including a premolar was obtained from a cadaver and scanned with micro-CT. Finite element method models were reconstructed from CT images at mid-sagittal plane of the tooth. Most studies have used a wide range of value(0.07-1000㎫) for elastic modulus of periodontal ligament. The elastic modulus of the periodontal ligament was analyzed by finite element method and compared with that of experiment model. This study indicated that the model without pulp was more suitable than that with pulp in two dimensional finite element analysis.
망상골의 구조와 밀도가 치과용 임플란트와 하악골에 미치는 영향
전창수(Chang Soo Chon),김한성(Han Sung Kim),이상업(Sang Up Lee),이경중(Kyoung Joung Lee) Korean Society for Precision Engineering 2005 한국정밀공학회지 Vol.22 No.10
This study examined the effect of cancellous bone microstructure on stress distribution within a premolar tooth and a dental implant against mastication force by the micro-finite element method (FEM). The mandibular specimen including a premolar was obtained from a cadaver and scanned with micro-CT to obtain CT images. FE models were reconstructed from CT images at mid-sagittal plane of the tooth. Six models were generated and analyzed for different structure and density in cancellous bone. Stress distributions for each implant (or tooth) and the surrounding bone were compared. The study indicated that the microstructure of cancellous bone should be considered in finite element analysis to produce reasonable results and thus implant systems with high success rate.
한국인 Cadaver Test에 의한 상완골 골수정 개발에 관한 연구
전창수(Chang Soo Chon),이재원(Jae Won Lee),고철웅(Cheol Woong Ko),오종건(Jong Keon Oh),우수헌(Soo Heon Woo),이성재(Sung Jae Lee) Korean Society for Precision Engineering 2011 한국정밀공학회지 Vol.28 No.8
The aim of this study is to develop a humeral Intramedullary fixation nail (HIFN) suitable for Korean people. In this study, CT images were obtained from 72 Korean cadaveric humeral bones and 3D Korean humeral bone models were reconstructed based on the CT images to investigate anatomical characteristics. Major design parameters of HIFN were selected using the morphological measurement information of the Korean humeral bone models. Through finite element analysis and mechanical tests, the developed HIFN prototype was compared with the Polarus HIFN (ACUMED<SUP>ⓡ</SUP>, USA), and it was found that the HIFN prototype showed similar and/or superior mechanical performance compared to the Polarus HIFN. Also, clinical validation for the HIFN prototype was carried out to check predictable troubles in surgical operations. Finally, optimal design modification was proposed to prevent the possible axillary nerve injury due to the locking screw system of the HIFN prototype.
김효선(Hyo-Seon Kim),고창용(Chang-Yong Ko),전창수(Chang-Soo Chon),고철웅(Cheol-Woong Ko),오종건(Jong-Keon Oh),윤종인(Join-In Youn),신태민(Tae-Min Shin),김한성(Han-Sung Kim),이법이(Beob-Yi Lee),임도형(Do-Hyung Lim) 대한체질인류학회 2008 해부·생물인류학 (Anat Biol Anthropol) Vol.21 No.4
최근 한국인 위팔뼈의 계측학적 특징에 대한 연구는 거의 없다. 또한, 한국인과 서양인의 위팔뼈에 대한 계측학적 특정을 비교한 연구는 아직까지 없다. 따라서 본 연구에서는 한국인 위팔뼈의 계측학적 특징을 살펴보고 이를 서양인 위팔뼈의 계측학적 특징과 비교하였다. 본 연구에서는 한국인 위팔뼈 72개(남자의 위팔뼈 66개, 여자의 위팔뼈 6개(왼쪽 위팔뼈 36개, 오른쪽 위팔뼈 36개))를 컴퓨터 단층촬영으로 얻은 2차원 단면 영상을 Mimics 11.11 (Materialise, Ann Arbor, MI)을 사용하여 3차원 모델로 재구성했고 이를 기반으로 위팔뼈의 계측학적 특징을 21개의 항목을 통해 살펴보있다. 이번 연구의 결과와 약 20년 전 자료의 결과를 비교하여 한국인 위팔뼈의 가로 직경(38.8±2.9㎜에서 40.8±3.6㎜)이 커졌다는 것을 알 수 있었다(p<0.05). 그리고 현 연구시점에서의 한국인 위팔뼈의 왼쪽과 오른쪽을 비교한 결과 통계적으로 유의한 차이가 없었다. (p>0.05). 한국인과 서양인 위팔뼈의 전체적인 크기를 비교한 경우에서는 위팔뼈머리의 기울기 각도, 큰결절 옆쪽의 오프셋 거리, 위팔뼈머리높이가 한국인이 더 크게 나타났다(p< 0.05). 본 논문에서는 한국인 위팔뼈의 계측학적 특징을 연구하였고 이를 통하여 한국인에게 적합한 인공보철물을 제작하는데 기여할 수 있을 것으로 기대된다. There were few studies about anatomic characteristics in Korean humerus recently. In addition, there was no comparison between Westerner (European and American) and Korean in anatomic characteristics of humerus. The aims of this paper are therefore to investigate anatomic characteristics in Korean humerus and to compare them with those of Westerner humerus. The seventy-two humerus (male: 66, female: 6) were scanned by computed tomography and three dimensional (3D) models of humerus were then reconstructed from acquired cross-section images. The twenty-one anatomic characteristics of the humerus were analyzed and were measured for each humerus. From the results, humeral head vertical diameter in the present study was generally bigger than that in the previous study (p<0.05). There was no significant difference between the anatomic characteristics of the right and left humerus in the present Korean (p>0.05). Humeral head inclination angle, greater tuberosity lateral offset distance, humeral head height in Korean were generally bigger than those in Westerner (p<0.05). This study may contribute to develop an optimal implants and prostheses for the treatment of humerus fractures of Koran.
전방십자인대 재건술 시 이식건의 봉합을 이용한 기둥 고정에서 적절한 요소: 봉합사 수, 매듭 수, 봉합 방법, 봉합 수 -돼지 건을 이용한 실험적 연구-
심재앙 ( Jae Ang Sim ),최석원 ( Suk Won Choi ),전창수 ( Chang Soo Chon ),김원석 ( Won Seok Kim ),이용석 ( Yong Seuk Lee ),이범구 ( Beom Koo Lee ) 대한스포츠의학회 2014 대한스포츠의학회지 Vol.32 No.1
We evaluated the conditions required for sutures tied to a post for tibial fixation during anterior cruciate ligament (ACL) reconstruction. Harvested porcine tendon was used as a graft material and nonabsorbable suture was used for sutures. Samples were tested for ultimate tensile load and elongation according to thread numbers, knot numbers, suture techniques and stitch numbers. As thread numbers were increased, ultimate tensile load was increased and elongation was decreased. However, more than 4 strands of threads provided the sufficient ultimate tensile load more than 454 N of normal ACL for daily activities. As knot numbers were increased, ultimate tensile load was increased, but elongation was decreased. In terms of failure mode, unraveling occurred 100% in 3 and 4 knots, 81.2% in 5 knots, 54.5% in 6 knots, and 0% in 7 knots. Suture techniques and stitch numbers didn`t significantly affect the ultimate tensile load and the elongation. For sutures tied to a post for tibial fixation in ACL reconstruction, more than 4 threads, more than 7 knots, and more than 4 stitches provide adequate ultimate tensile load and elongation.