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한승환,정민,이진우,Han, Seung-Hwan,Jung, Min,Lee, Jin-Woo 대한족부족관절학회 2006 대한족부족관절학회지 Vol.10 No.2
Purpose: The purpose of this study was to evaluate pressure distribution on the foot with the use of custom made foot orthosis and evaluate influential factors in young people using custom orthosis. Materials and Methods: 22 individuals comprised of young males and females were evaluated by radiograph, pedobarograph, and satisfaction rate and VAS score. The data was analyzed statistically to find influential factors for satisfaction after wearing the foot orthosis. Results: Around 50% of participants were satisfied in wearing the custom made foot orthosis. Initial VAS score of satisfaction of $36.2{\pm}19.7$ improved to $73.1{\pm}15.6$ after application of foot orthosis. There was a statistically significant difference. Talo-second metatarsal angle on AP radiograph after orthosis application was significantly related to satisfaction. On analysis of pedobarograph data, total contact area was increased and weight distribution was transferred medially on ambulation with the orthosis applied. Conclusion: Before designing the foot orthosis, individual foot factors such as foot anatomy and foot pressure distribution should be evaluated for foot comfort and better patient satisfaction.
한승환,유태석,김낙영,김홍종,Han, Seung-Hwan,Yoo, Tae-Seok,Kim, Nag-Young,Kim, Hong-Jong 한국터널지하공간학회 2013 한국터널지하공간학회논문집 Vol.15 No.2
숏크리트의 배합에 스크리닝스를 활용하는 기술이 친환경적인 측면에서 필요할것으로 분석되었다. 따라서, 스크리닝스의 재활용은 단순히 폐자재의 활용에 의미가 있는 것뿐만 아니라, 최근의 양질 모래 부족으로 인한 품질저하를 극복하는 방안이 될 수 있다. 본 연구에서는, 숏크리트용 혼합골재로서 스크리닝스의 활용성을 평가하고자 5개 지역별 스크리닝스에 대한 물리적인 특성과 스크리닝스를 혼합한 잔골재의 물리적인 특성, 그리고 숏크리트용 혼합골재의 입도분포에 미치는 영향을 분석하여 스크리닝스의 종류에 따른 최대 혼입량을 산정하였다. In the mix proportion of shotcrete, it was analyzed as required in terms of eco-friendly technology to take advantage of the screenings. Screenings of recycling can be a solution in order to overcome the quality degradation due to the recent lack of good quality sand as well as the utilization of waste materials. Five regional screening and screening replaced fine aggregates for physical characteristics were analyzed to evaluate the usability screenings as shotcrete's combined aggregate. It was analyzed the effect of particle size distribution in the combined aggregate for shotcrete and maximum replacement was estimated according to the type of screenings.
한승환,박영창,Han, Seung Hwan,Park, Young Chang 대한족부족관절학회 2014 대한족부족관절학회지 Vol.18 No.1
Amputation of diabetic foot ulcer and infection is a critical modality for saving a patient's life from life threatening infections or ischemic limbs. However, it can cause serious handicaps or complications, such as lifetime shortening and re-amputation of the other limb. The minimal amputation is the main goal of amputation in diabetic patients. However, insufficient amputation can have a harmful effect on patients. The decision of amputation is very difficult and should be made using multidisciplinary approaches. All aspects of the patient's situation, including vascular status, degree of infection, and medical conditions should be considered. The foot surgeon should keep in mind the notion that proper amputation can lead to a new life for diabetic foot patients.
특집 : 미세혈관 합병증 - 말초혈관에 의한 족부병변 - 당뇨발 괴사의 진단과 치료
한승환,Han, Seung-Hwan 사단법인 한국당뇨협회 2011 당뇨 Vol.259 No.-
당뇨발의 발생원인으로 신경병증 및 혈관병증이 있다. 신경병증의 경우 발의 자기 방어기전의 소실로 족부에 궤양이 유발되나, 혈관병증에 의한 혈액순환 장애는 궤양의 발생뿐 아니라, 산소 및 영양공급을 차단 시켜 궤양의 치료까지 어렵게 만들어 발이 까맣게 썩어가는 괴사까지 초래하게 된다.
한승환,이진우,김성환,강응식,김성재,Han, Seung-Hwan,Lee, Jin-Woo,Kim, Sung-Hwan,Kang, Eung-Shick,Kim, Sung-Jae 대한족부족관절학회 2005 대한족부족관절학회지 Vol.9 No.2
Purpose: We report our results of arthroscopic treatment of symptomatic avulsion fracture of the malleolus in chronic ankle pain, and also analyzed the clinical and radiological features for evaluating the good candidate for arthroscopic treatment. Materials and Methods: Fourteen patients who were diagnosed with intra-articular avulsion fractures of the malleolus received arthroscopic surgery and were followed up for at least a year. The clinical and radiological characters including MRI and arthroscopic findings were reviewed. Clinical assessments were done according to the AOFAS score system. Results: There was a history of inversion type of the injury in most cases and local tenderness of lesion site was a unique. MRI study showed thickened anterior talofibular ligament (ATFL) in 8 cases (57%) and discontinued ATFL in 3 cases (21%). Enhanced signal surrounding soft tissue corresponding to synovial inflammation and impingement was found in 12 cases (86%). Preoperative score of all patients were $74.0{\pm}5.5$, which improved to $89.3{\pm}6.7$ at the follow-up after the treatment (P<0.001). Conclusion: Most patients had history of injury and localized tenderness in the area coinciding with radiological findings. Thickened ATFL and contrast enhancement around the ossicle were frequently found. Symptomatic avulsion fractures of the malleolus associated with the clinical and radiological findings above could be a good candidate for arthroscopic treatment.