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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,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.
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.
원위부 Chevron 절골술 및 BOLD 나사$^{(R)}$ 고정술을 이용한 무지 외반증의 치험
한승환,이진우,최우진,한수봉,강응식,Han, Seung-Hwan,Lee, Jin-Woo,Choi, Woo-Jin,Hahn, Soo-Bong,Kang, Eung-Shick 대한족부족관절학회 2005 대한족부족관절학회지 Vol.9 No.2
Purpose: To present our experience of distal chevron osteotomy utilizing one BOLD $screw^{(R)}$ as an alternative fixation method which has advantages over the Kirschner (K)-wire fixation. Materials and Methods: Between January 2001 and June 2003, 19 patients with a symptomatic hallux valgus deformity underwent 20 distal metatarsal chevron osteotomies with one BOLD $screw^{(R)}$ fixation. The mean age was 55.6 years with a minimum follow up period 12 months. For radiographical evaluation, hallux valgus angle (HVA) and intermetatarsal angle (IMA) were used. For clinical evaluation, we used AOFAS hallux metatarsophalangeal interphalangeal scale and overall satisfaction of the patients. Results: The AOFAS scores improved from mean 47.5 points to mean 68.1 points at postoperative 3 months and mean 86.0 points at last follow-up. The average HVA corrected from 25.3 degrees to 12.7 degrees. The IMA was corrected from 11.6 degrees to 7.6 degrees. The overall satisfaction of the patients was 85%. There was no major complication. Conclusion: We demonstrated that distal chevron osteotomy with one BOLD $screw^{(R)}$ fixation has advantages such as no additional procedure, no loss of correction, early rehabilitation, no prominent hardware and skin irritation. This method also showed excellent bone union, correction and patient satisfaction.