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안영준,한성호,양보규,이승림,유재호,정선욱,빈성우,주민홍,김성완,Ahn, Young-Joon,Hahn, Sung-Ho,Yang, Bo-Kyu,Yi, Seung-Rim,Yoo, Jae-Ho,Chung, Shun-Wook,Bin, Sung-Woo,Zoo, Min-Hong,Kim, Seong-Wan 대한족부족관절학회 2006 대한족부족관절학회지 Vol.10 No.1
Purpose: The purpose of this study is to assess the results of the autologous osteochondral grafting for the osteochondral lesion of the talus. Materials and Methods: This study included 21 patient who had been treated with the open autologous osteochondral grafting between December, 1999 and December 2003. We treated the patients with autologous osteochondral grafting method who had the lesion of stage II or medial lesion of stage III without improvement for at least 6 months, the medial lesion of stage IV, the lateral lesion of stage III, IV by Berndt and Harty's classification or who had not improved with previous operation. The average duration of follow up was 26 (12-56) months. 6 patients had been treated with the previous operation that 3 patients with drilling, 3 patients excision, curettage and drilling. Results: The average AOFAS Ankle/Hindfoot score was 92.7 points and no patient had a limitation of the daily activities due to pain or abnormal function. Postoperative radiography showed good joint congruency and postoperative MRI good incorporation of the graft. The average Lysholm knee score was 96 points and only two patients had mild knee pain during severe exertion. Conclusion: The autologous osteochondral grafting is the useful operative method when the lesion is advanced stage or when previous operative treatment has failed.
후방 이중 후방십자인대 징후; 양동이 손잡이형 내측 반월상 연골판 파열의 드문 MRI 징후
유재호(Jae Ho Yoo),한성호(Sung Ho Hahn),양보규(Bo Kyu Yang),이승림(Seung Rim Yi),안영준(Young Joon Ahn),윤동진(Dong Jin Yoon),김성완(Seong Wan Kim),장종범(Chong Bum Chang) 대한정형외과학회 2007 대한정형외과학회지 Vol.42 No.1
양동이 손잡이형 반월상 연골판 파열 시에 나타날 수 있는 MRI 소견들 중에서 이중 후방십자인대 소견은 후방십자인대의 전하방에서 후방십자인대와 평행한 음영을 보이는 것으로 양동이형 반월상 연골판 파열 시 전위된 절편이 중앙부로 전위되어 과간 절흔에 감돈되어 있는 상태를 반영한다. 그러나 전위된 절편이 후방십자인대의 후상방에서 관찰되는 경우는 드물며, 양동이 손잡이형 파열의 전방부에서 전각부와 분리가 생겨 절편이 후상방으로 전위된 것으로 생각할 수 있으며, 저자들은 이를 전자와 구별하여 ‘후방 이중 후방십자인대 징후(posterior double PCL sign)’로 부르고자 한다. 본 증례에서는 전방십자인대 손상과 후방 이중 후방십자인대 소견을 보였던 내측 반월상 연골판 양동이 손잡이형 파열이 동반된 환자에서 전방 십자 인대 재건술과 반월상 연골 부분 절제술을 시행하였다. Among the MRI signs of meniscal bucket handle tears, a double posterior cruciate ligament (PCL) sign manifests on the sagittal images as a low signal band anterior and parallel to the PCL. The mesially displaced fragment may be confined to the intercondylar notch. However, the torn fragment is rarely displaced to the posterosuperior region of the PCL. If it does occur, separation at the anterior horn may be assumed. We propose this type of lesion be called the posterior double PCL sign in contrast to the ordinary double PCL sign. We present a case showing the 'posterior double PCL sign' accompanying an anterior cruciate ligament injury.
신광복(Shin Kwang-Bok),한성호(Hahn Seong-Ho) 한국철도학회 2003 한국철도학회 학술발표대회논문집 Vol.- No.-
In order to evaluate the strength of carbody structures of railway rolling stock made of laminated fiber-reinforced composite materials, total laminate approach was introduced. Structural analyses were conducted to check the basic design of the hybrid composite carbody structure of the Korean Tilting Train eXpress(TTX) with the service speed of 180㎞/h. The mechanical tests were also conducted to obtain strengths of composite laminates. The results shown that all stress components of composite carbody structures were inside of failure envelopes and total laminate approach was recommended to predict the failure of composite carbody structures at the stage of the basic design.
설계요구조건 검증을 통한 한국형 고속 틸딩열차(TTX)의 차체 재료 선정에 관한 연구
신광복(Kwang-Bok Shin),구동회(Dong-Hoe Koo),한성호(Seong-Ho Hahn),박기진(Kee-Jin Park) 한국철도학회 2004 철도저널 Vol.7 No.2
In order to determine the most suitable material system for achieving the lightweight design while fulfilling the design requirements of carbody structures of Korean Tilting Train eXpress(TTX), aluminum carbody, composite carbody, and hybrid carbody combined with aluminum and composite structures were considered in the present study. The finite-element analysis was used to verify the design requirements of the TTX carbody structures with the material system considered in the design stages. The stresses in the carbody structures and deflections of underframe against static load cases were used as design criteria. The results show that the hybrid carbody structures are beneficial with regard to weight savings and structural integrity in comparison to aluminum and composite carbody structures.