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최의성,원중희,김용민,서중배,이호승,이신노,Choi Eui-Seong,Won Choong-Hee,Kim Yong-Min,Seo Joong-Bae,Lee Ho-Seung,Lee Sin-Ro 대한관절경학회 2001 대한관절경학회지 Vol.5 No.1
목적 : 관절경 검사에서 전방 십자 인대의 만성 파열에서 파열된 전방 십자 인대가 슬관절 내에서 반흔을 형성하고 있는 경우 전방 전위 감소 여부, 자기 공명 영상 및 동반손상을 분석하고자 한다. 대상 및 방법 : 1996년 12월부터 2000년 5월까지 전방 십자 인대의 만성 파열이 있었던 19예를 대상으로, 관절 계측기의 환측과 건측의 도수 전방 최대 전위차, 자기 공명 영상 및 동반손상을 분석하였다. 결과 : 만성 파열이 있었던 19예 중 7예$(37\%)$의 KT-2000관절계측기 검사 중 환측과 건측의 도수 최대 전방 전위차는 평균 $2.78{\pm}2.41mm$$(0\~6.5)$로, 반흔 형성이 없었던 12예의 평균 $5.75{\pm}2.52mm(3\~10)$와 비교하여 유의한 차이를 보였으며, 반월상 연골의 손상은 반흔을 형성하고 있던 7예 중 2예$(28\%)$, 반흔 형성이 없었던 12예 중 8예$(67\%)$에서 동반되었다. 자기 공명 영상 소견은 파열된 전방 십자 인대의 원위 조각이 비교적 직선주행으로 대퇴 기시부를 향하는 경우가5예, 연속성을 유지하며 국소적인 각형성이 있는 경우가 2예였다. 결론 : 전방 십자 인대 만성 손상의 관절계측기 검사에서 유의한 전방 전위가 없고, 자기 공명 영상에서 파열된 원위 조각이 비교적 직선 주행으로 대퇴 기시부를 향하거나 연속성을 유지하며 국소적인 각 형성을 이루는 소견들을 보이는 예에서는 파열된 전방 십자 인대의 반흔 형성을 고려해야될 것으로 사료되며, 반흔을 형성하고 있는 예에서 반월상 연골의 손상 빈도가 낮은 소견은 전방 십자 인대 완전 파열의 자연경과 연구에 도움이 되리라 생각한다. Purpose : To analyze changes of the anterior translation, MRI findings and associated injuries at scarring of the torn ACL in the chronic ACL rupture. Materials & Method : From Dec. 1996 to May 2000, 19 patients who were diagnosed as the chronic ACL rupture were studied. We analyzed KT-2000 side to side difference of maximal manual anterior displacement(MMAD), MRI findings and associated injuries. Results : There was statistically significant difference in the average MMAD between the 7 cases$(37\%)$ with scar formation$(2.78{\pm}2.41mm)$ and the 12 cases without scarring$(5.75{\pm}2.52mm)$. The chronic ACL rupture without scarring had more meniscal injuries$(67\%)$ than with scarring$(28\%)$. MRI showed that relatively straight bands toward expected insertion site with single large fragment(5 cases) and continuous band with focal angulation(2 cases). Conclusion : If relatively straight bands toward expected insertion site with single large fragment or continuous band with focal angulation on MR imaging is showed in the patient without significant anterior translation at arthrometer, the possibility of the scar formation of the torn ACL should be considered. We think that the chronic ACL rupture with scarring had less meniscal injuries than without scarring will give additional information on the natural history of ACL injuries.
원중희,김용민,서중배,최의성,이호승,고상욱,이건국,Won, Choong-Hee,Kim, Yong-Min,Seo, Joong-Bae,Choi, Eui-Seong,Lee, Ho-Seung,Ko, Sang-Wook,Lee, Geon-Kook 대한족부족관절학회 1998 대한족부족관절학회지 Vol.2 No.1
골격외 연골종은 수부와 족부에 드물게 발생하는 양성 종양으로 방사선학적 및 조직학적으로 연골 육종과 유사하여 감별 진단이 필요하며 국소 절제술로 치료가 가능하다. 저자들은 본원에서 64세 남자의 족저부에 발생한 골격외 연골종을 시험하였기에 문헌고찰과 함께 보고하는 바이다. 본 증례는 제술 후 12개월의 추시결과 재발의 소견은 없었고, 통증없이 정상적인 보행이 가능한 양호한 상태이다. There are various cartilagenous tumors which can be found within soft tissue. Among them, extraskeletal chondroma is benign and rare tumor that is most frequently found in the hands adjacent to periarticular tissues or tenosynovium of the hands. They can exhibit worrisome radiographic and histologic features that may mimic chondrosarcoma. We experienced a case of extraskeletal chondroma in plantar aspect of the foot occurred in a 64 year-old male patient. After investigation with MRI, the mass seemed to be benign. Excisional biopsy was performed, and the histologic outcome was an extraskeletal chondroma. Because this kind of tumor is rare and benign. we report this case with reviewing of the literatures.
홍현표(Hyun-Pyo Hong),최의성(Eui-Seong Choi),이시빈(See-bin Lee),이희순(Hee-soon Lee) 한국철도학회 2011 한국철도학회 학술발표대회논문집 Vol.2011 No.5
The neutral section was installed in order to prevent conflict with different phase angle source in electric railway catenary system. The speed of electric train reduced due to coasting operation by notch off when it passed the neutral section. And, the catenary wire was damaged and the accident might be happened because of the arc generation when the electric train passed the neutral section with notch off condition. The inrush current of main transformer installed tiling train is analyzed during the operation of MCB(main circuit break) passing through the neutral section. The instantaneous waveform of load current were analyzed in case of powering and regenerative braking. Inrush current waveform with run of AC railway train showed that inrush current waveform and harmonics, the inrush current generated from main transformer in train has bad effects on power quality problem. In order to reduce these inrush currents, the MCB is connected when the phase angle of voltage is 90 degree. This paper is to measure inrush current and harmonics in main transformer of high speed train in neutral section of electric railway. This measurement report is used to control minimum inrush current in algorithm and power phase angle
원중희 ( Choong Hee Won ),최의성 ( Eui Seong Choi ),홍성선 ( Seong Sun Hong ) 대한류마티스학회 1999 대한류마티스학회지 Vol.6 No.3
Objectives: Bee venom contains a potent antiinflammatory peptide 401 as well as mellitin. The purpose of this study was to see the efficacy and safety of purified bee venom injection therapy for knee or spinal osteoarthritis patients. Methods: One hundred and one osteoarthritis patients were randomly assigned to bee venom injection therapy or oral nabumetone medication group. Bee venom injection group was subdivided into 3 groups according to different dosing schedule(group A: gradual increase up to 0.7mg, group B: up to 1.5mg and group C: up to 2.0mg). Control group patients(group D) were given 1000mg nabumetone daily for 6 weeks. There were 25, 26, 25, and 26 patients assigned to A, B, C, or D group. The efficacy of treatment was evaluated by measuring instruments developed by authors, and the safety of bee venom injection was evaluated by hematology and chemistry laboratory examination. Results: Among 101 patients, eighty-one patients completed the study, but twenty patients were dropped out and two of these patients were dropped out due to adverse drug reaction. The efficacy in bee venom group showed better improvement than nabumetone group(p<0.01). Within bee venom group, group B and C showed better improvement than group A(p<0.01). Itching around injection site occurred in most patients, and bodyache occurred in 49 patients(81.7%), Hemoglobin was decreased(0.3g/dl) in group C, but no significant changes were observed in other laboratory values. Conclusion: The efficacy of bee venom injection in the control of knee or back pain in osteoarthritis patients was better than nabumetone medication. No severe allergic or adverse reaction was observed in bee venom treatment patients, but problems related with bee venom injection, such as pruritis, bodyache, and the possibility of anaphylaxis, should be considered for the use of bee venom injection.