Secondary Chondrosarcoma from an Osteochondroma of the Proximal Tibia Involving the Fibula

조환성,한일규,김한수 대한정형외과학회 2017 Clinics in Orthopedic Surgery Vol.9 No.2

There are few reports on the surgical treatment of secondary malignancy arising from an osteochondroma on the lateral side of the proximal tibia. From March 2008 to December 2011, 3 patients were treated for a secondary chondrosarcoma from an osteochondroma of the proximal tibia involving the fibula. The operative procedure can be summed up as follows: (1) resection of the tumor including the fibula; (2) preservation of the peroneal nerve and the fibular head; and (3) arthrodesis of the proximal tibiofibular joint. Serial radiological studies showed successful fusion in the proximal tibiofibular joint in all patients. The Musculoskeletal Tumor Society functional scores were excellent in all 3 patients. No patients showed instability of the ipsilateral knee joint in any direction. All 3 patients could return to sports activities. Until the last follow-up, there was no evidence of disease recurrence. We suggest that the operative procedure described in this article would provide satisfactory oncological and functional outcomes.

코로나 19 시대 지속가능한 여행업

조환성 제주관광학회 2020 제주관광학회 학술대회 Vol.2020 No.09

자궁선근증의 고찰

조환성,이해혁,정성윤,김성욱,이순곤,남계현,이임순,이권해 순천향의학연구소;Soonchunhyang Medical Research Institute 2000 Journal of Soonchunhyang Medical Science Vol.6 No.1

Objective: This study was designed to estimate the frequency and risk factor for edenomyosis Methods: The clinical records of 623 women undergoing hysterectomy were retrieved in the Department of Obstetrics and Gynecology, Soonchunhyang University Hospital, during 5 years, from Jan. 1995 to Dec. 1999. Results: The following result were obtained. 1. Adenomyosis was found in 247 of 623 patients(39.6%) 2. The highest incidence was 40-49 years of age group, an incidence of 46.6% and mean age was 44.7 years. 3. Adenomyosis was more frequently observed in parous women than non-parous women, such as 93.1% and 6.9%, respectively. 4. Dysmenorrhea, metrorrhagia, pelvic pain and vaginal bleeding were common symptom of adenomyosis, an incidence of 28.7%, 19.0%, 18.2% and 16.2%, respectively. 5. Myoma was the most combined disease in adenomyosis, showing the incidence of 54.7%. 6. Grossly, the size of uterus was enlarged more than 10 weeks gestational size in adenomyosis, an incidence of 61.9%. 7. Preoperative diagnostic accuracy of adenomyosis was 6.9%. Conclusion: The results show that deeply understanding of the common symptoms and epidemiology of adenomyosis improve the preoperative diagnostic accuracy.

Lab-scale SOFC를 이용한 바이오가스 탈황특성과 효율에 관한 연구

조환성,정진도,김장우,신태용,변태욱 한국에너지학회 2014 한국에너지공학회 학술발표회 Vol.2014 No.4

악성 골종양의 치료: 금속 종양 인공삽입물을 이용한 사지구제수술

조환성,한희수,윤지수 대한의사협회 2020 대한의사협회지 Vol.63 No.8

Recently, most bone cancers have shown a dismal prognosis even though they were managed with amputation. In the 1970s, anticancer drugs began to be used for bone tumor treatment as adjuvant agents, with the hope of survival improvement, while keeping the limb preserved. The 5-year survival of osteosarcoma patients increased up to 70% with anticancer chemotherapy and limb-salvage surgery. Limb salvage surgery includes all surgical procedures performed to accomplish resection of a malignant bone tumor and reconstruction of the skeletal system with an acceptable oncological and functional outcome. Currently, surgeons can choose a variety of reconstruction methods, including osteoarticular allograft, allograft-prosthesis composite, and metallic tumor endoprosthesis. However, complication rates are still high. The advancement of implant technology, adjuvant chemotherapy, and radiologic imaging modality has contributed to the evolution of limb salvage surgery. Nevertheless, there are still many barriers that have yet to be addressed to move further.

항법장치를 이용한 골종양 수술

조환성,박일형,문종욱,김한수,Cho, Hwan-Seong,Park, Il-Hyung,Mun, Jong-Uk,Kim, Han-Soo 대한근골격종양학회 2009 대한골관절종양학회지 Vol.15 No.1

컴퓨터를 이용한 정형외과 수술(Computer-assisted orthopaedic surgery, CAOS) 분야는 인공관절 치환술, 십자 인대 재건술, 척추경 나사삽입술 등의 수술에서 그 효용성과 정확성에 대해 많은 평가가 있었다. 최근에는 골종양 의 절제와 종양 절제 후 발생한 골결손 재건에 적용한 증례가 보고되고 있다. 종양과 정상조직 간의 3차원 관계를 보여 줌으로써, 종양의 안전한 절제 뿐 아니라 기능의 보존을 최대화하는데 도움을 줄 수 있다. 그러나, navigation을 골종양 수술에 이용하기 위해서는 사용방법에 대한 완벽한 이해와 정확성 뒤에 숨어있는 오차에 대해 숙지하고 있어야 할 것이다. 저자의 임상 경험을 토대로 종양 수술에서 navigation을 이용할 때 수술 방법과 일반 정형외과 수술에서의 navigation 사용과 다른 점을 기술하고자 한다. The usefulness and accuracy of computer-assisted surgery have been evaluated clinically in many orthopedic fields, such as, joint replacement arthroplasty, cruciate ligament reconstruction, and pedicle screw placemen. Recently several preliminary reports have been issued on the application of navigation to bone tumor surgery. The main advantage of navigation-assisted bone tumor surgery is that it provides highly accurate three-dimensional radiological information for intraoperative guidance. In particular, distances from tumors to resection margins can be precisely determined using intraoperative three-dimensional images. Accordingly, the technique allows preservation of function to be maximized by minimizing unnecessary resection. However, surgeons should recognize that the accuracies of navigation systems in bone tumor surgery have some hidden pitfalls. Here, based on our clinical results, we describe the surgical techniques used and include some cautionary notes.

항법장치를 이용한 골종양 수술

조환성(Hwan Seong Cho),양석훈(Seok Hoon Yang),박해봉(Hae Bong Park),한일규(Ilkyu Han),김한수(Han-Soo Kim) 대한정형외과학회 2013 대한정형외과학회지 Vol.48 No.6

정형외과 영역에서 수술용 항법장치는 인공관절 치환술, 척추경 나사 삽입술, 십자인대 재건술 등에서 그 효용성이 인정되어 왔으나 최근 골종양의 절제와 종양 절제 후 발생한 골결손 재건술에 대해 적용된 사례가 보고되면서 점차 유효성이 인정되고 있다. 특히 악성 골종양의 수술적 치료에서 종양의 경계를 실시간으로 모니터링할 수 있게 함으로써 종양의 안전한 절제를 돕고 정상조직의 불필요한 절제를 최소화하는 데 도움이 될 것이다. 또한 수술 전 시뮬레이션이 가능하게 되고 종양 절제 후 결손 부위와 모양을 미리 예측할 수 있어 사전 주문형 종양대치물을 이용한 골격재건에 큰 도움을 줄 것으로 기대된다. 그러나 항법장치를 골종양에 이용하기 위해서는 사용방법에 대한 완벽한 이해와 정확성 뒤에 숨어 있는 오차에 대하여 숙지해야 한다. The usefulness and accuracy of computer-assisted surgery have been evaluated clinically in many orthopedic fields, including joint replacement arthroplasty, pedicle screw placement, and cruciate ligament reconstruction of the knee joint. Since several preliminary reports on application of navigation to bone tumor resection and reconstruction surgery have recently been issued, navigation-assisted surgery for bone tumors has received significant attention with regard to its usefulness. In particular, navigation can be helpful during surgery for musculoskeletal tumors, because it can maximize the accuracy of resection and minimize the unnecessary sacrifice of normal tissue by providing precise intraoperative three-dimensional radiological information. In addition, it is helpful in prosthetic reconstruction, because preoperative virtual simulation makes it possible to estimate size and location of bone defect to be left after tumor resection. Surgeons should recognize that use of navigation systems in bone tumor surgery has some hidden pitfalls. Here, based on our clinical results, we describe the surgical techniques that we have used and include some cautionary notes.

Role of Nonsteroidal Anti-inflammatory Drug in Treatment of Extra-abdominal Desmoid Tumors

조자영,Sanjay Gupta,조환성,박민석,목수정,한일규,김한수 대한정형외과학회 2018 Clinics in Orthopedic Surgery Vol.10 No.2

Background: We retrospectively reviewed the outcomes of patients who had been treated with meloxicam for the extra-abdominal desmoid tumors and evaluated the correlation between clinical outcome and clinic pathological variables. Methods: Twenty patients treated with meloxicam were followed up every 3 to 6 months. Meloxicam administration was planned at 15 mg/day orally for 6 months. Results: Of the 20 patients evaluated, according to Response Evaluation Criteria in Solid Tumors criteria, there were five patients with partial response (25.0%), eight with stable disease (40.0%), and seven with tumor progression (35.0%). The cumulative probability of dropping out from our nonsurgical strategy using meloxicam was 35.0% at 1 year and 35.0% at 5 years. Conclusions: The present study suggests that conservative treatment would be a primary treatment option for this perplexing disease even though we were not able to determine that the use of a cyclooxygenase-2 inhibitor would have an additional influence on the natural course of a desmoid tumor.

진료실에서 흔히 볼 수 있는 양성 골종양

조환성(Hwan Seong Cho),박영균(Yeong Kyoon Park),오주한(Joo Han Oh),한일규(Ilkyu Han),김한수(Han-Soo Kim) 대한정형외과학회 2014 대한정형외과학회지 Vol.49 No.6

양성 골종양이 발견되는 임상적인 상황은 1) 증상 없이 건강 검진 시 촬영한 흉부 방사선 사진이나 교통사고 후 촬영한 영상 등에서 우연히 발견되는 경우, 2) 관절염 등의 다른 정형외과적 문제로 촬영한 방사선 사진에서 발견되는 경우, 3) 종양에 의한 통증으로 영상 검사에서 발견되는 경우 등이 있다. 양성 골종양의 진단을 위해서는 다양한 질환에 대한 지식을 갖고 있어야 하고 그 질환의 임상적 특징에 대해 잘 알고 있어야 하겠다. 또한 이 종양이 어떤 종류의 양성 골종양인지 혹은 어떤 치료가 필요할지에 대한 고민과 더불어 악성 골종양의 가능성은 없는지에 대해서도 반드시 한 번 숙고할 필요가 있겠다. 영상 검사에서 양성 골종양이 의심된다 하더라도 구체적인 어떤 진단명을 찾아낼 수 없는 경우에는 추시 방사선 검사를 시행하여 악성 골종양의 가능성을 배제하여야 하겠다. 본 종설에서는 진료실에서 흔히 볼 수 있고 그 임상적 중요성이 높은 10종류의 양성 골종양에 대해 임상적 특징과 단순 방사선 사진을 위주로 한 영상의학적 소견 그리고 치료 및 예후에 대해 알아보고자 한다. Benign bone tumors can be found in the following clinical situations: 1) incidental findings on chest radiograph for health screening without symptoms or radiographs after traffic accident; 2) radiographs for other orthopedic problems, such as osteoarthritis; and 3) pain caused by the tumor. Knowledge of various diseases and their clinical characteristics is required for diagnosis of benign bone tumors. In addition, one should consider carefully whether or not the lesion has the characteristics of benign bone tumor or possibility of malignancy so that proper treatment can be decided. In case the diagnosis cannot be confirmed, even though benign bone tumor is suspected on radiography, follow-up radiographs should be taken to rule-out malignant bone tumors.

조향 회피 시스템의 성능 개선을 위한 ESC/RWS 통합 샤시 제어

조환성(Hwanseong Jo),김두용(Dooyong Kim),강태완(Taewan Kang),소민우(Minwoo Soh),권재준(Jaejoon Kwon),박기홍(Kihong Park) 한국자동차공학회 2014 한국자동차공학회 학술대회 및 전시회 Vol.2014 No.11

This paper presents an performance improvement of emergency avoidance system with Electronic Stability Control(ESC) & Rear Wheel Steer(RWS) integrated control. ESC system is designed using Sliding Mode Control(SMC), which is one of high robustness variable structure control system. Front wheel steering angle and rear wheel steering angle are calculated by using Linear Quadratic Regulator(LQR). The desired trajectory for collision avoidance is determined by a 5th order polynomial. The desired steering wheel angle to follow the trajectory is calculated with Vector pursuit and the current position of the vehicle is estimated by using the Observer. The results indicate that the proposed logics can delay last time to steer for collision avoidance.