• 한국산학기술학회논문지
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• 제8권4호
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• pp.795-802
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• 2007

미 국방성은 미래 전장에서 네트워크화를 통한 전투 능력의 시너지 효과 증대를 도모하고 있다. 특히 Joint 2020에서는 전장에서 작전 수행시 합동군의 지식 우위와 결심 우위를 위한 정보 우위를 추구하고 있다. 본 연구에서는 미국을 중심으로 하는 네트워크 중심 작전에 대한 개념과 운용 사례를 살펴보고 작전운용 거리에 대한 정량적인 거리와 영향, 통신중계 성능을 분석하였다.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2005년도 춘계학술대회 논문집
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• pp.896-902
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• 2005

An orthopedic surgeon normally gets the operational parameters of total knee arthroplasty from medical images(CT, MRI). Anatomical axis, mechanical axis, the width and height of femur, or tibia are the most important parameters related with accomplishment of TKA. This paper presents a methodology of simulation that virtually operates TKA according to 2D medical images. Using this simulator, some important parameters for operation can be achieved before hand. The simulator provides the 3D computational model of a knee joint and then derives the proper size of implant corresponding to the joint. The whole process of TKA can be simulated such as clipping a knee joint, assembling the joint and its implants, visualizing all the operation steps, deriving some crucial parameters such as anatomical axis and cutting thickness, and predicting the result of TKA. Some examples are given and discussed to validate the methodology.

• Clinics in Shoulder and Elbow
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• 제4권1호
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• pp.1-12
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• 2001

Purpose: To evaluate the histologic effect(LM and EM findings)of nonablative LASER and thermal energy on knee joint capsule of rabbit. Material and Methods: The nonablative LASER and thermal energy was applied to the rabits(average age 36 weeks, weight 5 ㎏). There were divided into 4 groups with 6 rabbits in each. The group I received 6 watts of LASER, group Ⅱ 12 watts of LASER, group Ⅲ 60° of thermal energy, and group Ⅳ 70° of thermal energy. The histologic study included H-E, Massons trichrome stain and electron microscopy at immediate, 3 weeks and 6 weeks after operation. Results: The histologic finding in immediate after operation was shown a fibrous degeneration of collagen on all groups and related to the energy level. The histologic finding after 3 weeks showed fibrosis and this fibrosis related the level of energy. Especially the group IV was shown flattening of capsule and deep fibrosis. The histologic finding after 6 weeks was shown marked recovery of collagen arrangement and capillary proliferation in group Ⅰ,Ⅱ and Ⅲ. But in the group Ⅳ not recovered. Conclusion: The nonablative LASER or thermal energy can cause degeneration, fibrosis and contracture of joint capsular collagen.

• Archives of Plastic Surgery
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• 제36권3호
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• pp.318-321
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• 2009

Purpose: The bony mallet finger injury is generally managed by conservative treatments, but operative treatments are needed especially when the fractures involve above 30% of articular surface or distal phalanx is accompanied by subluxation in the volar side. This is the reason they often result in chronic instability, articular subluxation and unsatisfactory cosmetic. In this report, We describe new method using the hook plate as an operative treatment of Mallet finger deformity. Methods: Among 13 patients with Mallet finger deformity who came from February 2006 to February 2008, six patient were included in surgical indication. Under local anesthesia, H or Y type incision was made at the DIP joint area. After the DIP joint extension, the hook plate was put on the fracture line, and one self tapping screw was used for fixation. 2 hole plate which was one of the holes in 1.5 mm diameter was cut in almost half and bended through approximately $100^{\circ}$. Results: In all six cases which applied the hook plate, complications such as loss of reduction or nail deformity were not seen. In only one patient, hook pate was removed due to inflammatory reaction after surgery. At 2 weeks after operation, active motion of DIP joint was performed. The result was satisfactory not only cosmetically but also functionally. At 6 weeks after operation, the range of motion of DIP joint was average $64^{\circ}$. Conclusion: The purpose of the operative treatment for mallet finger deformity using the hook plate is to provide anatomical reduction with rigid fixation and to prevent contracture at the DIP joint. While other operations take 6 weeks, the operation using the hook plate begins an active motion at 2 weeks after operation. Complication rate was low and the method is rather simple. Thus, the operation using the hook plate is recommended as a good alternative method of the mallet finger deformity treatment.

• Clinics in Shoulder and Elbow
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• 제13권1호
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• pp.34-39
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• 2010

목적: 견봉쇄골 관절의 급성 탈구에서 원추인대 기능의 강화를 위한 봉합 나사못을 추가한 변형된 Phemister 술식의 치료 방법을 소개하고 그 결과를 알아보고자 하였다. 대상 및 방법: 14예의 환자를 대상으로 하였으며 Rockwood 제 3형이 11예, 5형이 3예 였고 환자의 평균나이는 45.2세 였다. 변형된 Phemister 술식에 원추인대 기능의 강화를 위한 봉합 나사못을 추가하여 수술하였다. 추시 기간은 평균 14개월이었으며 술 후 임상적 평가는 Weitzman 분류 및 VAS 점수와 Constant 점수, KSS 점수를 사용하였다. 결과: Weitzman 분류상 13예에서 우수, 1예에서 양호로 평가되었고 평균 관절 운동 범위는 전방거상 170.7도, 외전 166.4도, 외회전 68.2도, 내회전 T7 였다. 평균 VAS 점수는 1.9, 평균 Constant 점수는 90.8점, 평균 KSS 점수는 91점이었다. 방사선학적 평가 결과는 모든 예에서 양호한 결과를 얻었다. 결론: 견봉쇄골 관절의 급성 탈구에서 원추인대 기능의 강화를 위한 봉합 나사못을 추가한 변형된 Phemister 술식은 임상적으로 유용한 수술 방법으로 사료된다.

• 대한지역사회영양학회지
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• 제7권3호
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• pp.361-372
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• 2002

The purpose of this study was to investigate the operation and management systems of the school food services in Korea and to provide useful data for improving the quality of the school food services. This study was conducted in school food service operations nationwide using a written questionnaire. The questionnaires were mailed to the dieticians of three types of school food service systems-conventional, commissary, and joint-management. Of the 660 schools that participated in this study, the responses from 212 conventional system, 212 commissary system and 200 joint-management system services were selected for analysis. Statistical analysis was performed utilizing the SAS/Win 6.12 program so as the provide a descriptive statistics. The main results of this study can be summarized as follows: The average number of meals served per day was 1014, 738 and 695 in the conventional food service, the commissary food service and the joint-management flood service systems, respectively. Over half (58.9%) of food service facilities were utilizing computer programs for their operations. Most of the commissary flood service systems (52.4%) had a satellite school and served a maximum of 2000 meals per day. In most of the joint-management food service systems (87.1%), the number of food service schools managed was two and a maximum of 3330 meals were sewed. Only one dietician was posted irrespective of the school food service system. The mean hours of work by the dietician per day was 8.9, 8.6 and 8.6 in the conventional food service, the commissary flood service and the joint-management food service systems, respectively. The principal work functions of cook personnel were cooking and cleaning.

• 재활복지공학회논문지
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• 제8권4호
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• pp.313-318
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• 2014

본 논문은 편마비환자들의 상지재활 기기 운용방법으로 건측에서 관성측정장치를 기반으로 한 관절각 추정 기법과 착용 과정에서 발생하는 측정축 뒤틀림을 보정하는 기법을 제안한다. 제안하는 기법을 검증하기 위해 실험자 왼팔의 상완과 전완에 관성측정장치를 부착하였으며, 임의의 자세를 촬영하여 검출한 실제 관절 각과 관절각 추정한 각과 비교하여 검증 하였다. 그리고 측정축 뒤틀림을 보정하는 기법을 적용 전/후를 비교하여 검증하였다. 실험 결과 측정축 뒤틀림 보정을 적용전은 관절각 일치율이 89.16%로 저조한 일치율을 보였으나, 측정축 뒤틀림을 보정한 후에 관절각 일치율은 93.28%의 일치율로 4.12% 개선되었음을 확인 하였다.

• Clinics in Shoulder and Elbow
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• 제7권2호
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• pp.76-82
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• 2004

Purpose: In the traumatic anterior shoulder instability, the laxity of joint capsule and ligament is frequently demonstrated. Although a arthroscopic procedure to address anterior instability with joint capsular redundancy have generally provided good results, its recurrence rate is higher than open procedure. By reducing the capsular redundancy, thermal shrinkage is likely to improve the outcome of arthroscopic anterior stabilization. The objective of this study was to evaluate additional thermal capsular shrinkage as a treatment of joint capsular redundancy in anterior shoulder instability. Materials and Methods: From March 1999 to June 2000, 25 shoulders of 23 patients of recurrent anterior shoulder dislocation underwent arthroscopic Bankart repair with shrinkage procedure. The mean follow up was 29 months and average age at the time of operation was 26 years. Of these patients, 20 were male and 3 were female who had been experienced the average 8 times of dislocation before operation. Thermal shrinkage alone without Bankart repair was performed in two cases who did not have Bankart lesion. The clinical result was evaluated in according to Modified Rowe Score. Results: The Modified Rowe Score was improved from preoperative 35 points to postoperative 88 points. None of cases showed recurrence of dislocation. But, in two cases, temporary sensory hypesthesia of the axillary nerve was developed and in two cases of postoperative stiffness, arthroscopic capsular release and brisement were performed. Conclusion: Additional capsular shrinkage in arthroscopic technique to address recurrent anterior shoulder instability could treat effectively the capsular redundancy.

• 대한견주관절학회:학술대회논문집
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• 대한견주관절학회 1998년도 학술대회
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• pp.35-35
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• 1998

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2001년도 춘계학술대회 논문집
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• pp.631-634
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• 2001

In this study, the graphic simulation system of multi joint manipulator is developed to analyze and optimize the remote handling processes for the spent fuel assembly. This system consists of a 3-D graphical modeling system, a device assembling system, and a motion simulation system. To analyze and optimize the processes involved in multi-joint manipulator operation such as NFBC transportation process and bottom nozzle removal process, the virtual work place is implemented using a computer graphic technology. This virtual workcell is exactly same as that of the real environment. This graphic simulation system of the multi-joint manipulator can be effectively used for designing the main processes and maintenance processes of the spent fuel management.