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이광원(Lee. K.W.),석일우(Suk. I.W.),박경진(Park. G.J.) 한국자동차공학회 1999 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
General structure consists of parts and joints. These days. the structures are designed computationally by structural optimization. which uses the finite element analysis. It is very difficult to design<br/> structure with many parts because of the complexity. A jot of resources must be invested regardless of the reliability of solution. The large scale structures are simplified for the design purpose. At first. a simplified mode] is defined to include the behaviors of the large scale structure. The details of the those of the original mode1. Optimization methods are utilized for the matching process. The suggested method is verified through various examples. The method is very effective in designing large scale structures.
후방십자인대의 단독 및 동반 손상에서 관절경적 재건술 후 기능적 평가
이광원,이승훈,박재국,김하용,김병성,최원식,Lee Kwang-Won,Lee Seung-Hun,Park Jae-Guk,Kim Ha-Yong,Kim Byung-Sung,Choy Won-Sik 대한관절경학회 2002 대한관절경학회지 Vol.6 No.2
Purpose : To compare the functional evaluation with the posterior translation after arthroscopic PCL reconstruction in isolated and combined PCL-deficient knees. Materials and Methods : We retrospectively evaluated 45 patients with PCL-deficient knees who were treated by arthroscopic PCL reconstruction using Achilles tendon allograft from June 1994 to June 2000. The differences of posterior translation were measured with posterior stress lateral radiographs and KT-2000 arthrometer. The functional results were evaluated using the Lysholm knee score and IKDC evaluation form. Results : Preoperative mean side to side differences of the posterior translation were 11.83 mm in isolated PCL-deficient knees and 12.7 mm in combined PCL-deficient knees respectively. At the last follow-up in isolated and combined PCL-deficient knees, the mean radiographic side to side differences of the posterior translation were 6.38 mm and 6.7 mm, the average corrected 20 Ib posterior displacements using KT-2000 arthrometer were 3.5 mm and 4.1 mm, the mean Lysholm score were 87.4 and 81.2, the grade A and B of IKDC evaluation form were 16 cases $(88.9\%)$ and 23 cases $(85.2\%)$, respectively. Conclusion : The functional results had no relationship with the degree of posterior translation after arthroscopic PCL reconstruction. Tendency of posterior translation may be influenced by associated injury of the knee. 목적 : 후방십자인대의 단독 손상군과 동반 손상군에서 재건술 시행 후 발생되는 후방 전위의 정도를 분석하고 슬관절의 기능적 평가와 비교하고자 하였다. 대상 및 방법 : 1994년 6월부터 2000년 6월까지 동종 아킬레스건을 이용한 관절경적 후방십자인대 재건술을 시행받은 45명을 대상으로 하였으며 평균 추시 기간은 49개월이었다. 후방 전위 정도는 후방 부하 방사선 사진과 KT-2000 슬관절계를 이용하였고 슬관절 기능 평가는 Lysholm score와 IKDC evaluation form을 이용하였다. 결과 : 건측과 비교한 방사선학적 후방 전위의 차이는 단독 손상군에서 술 전 평균 11.83 mm, 최종 추시 6.38 mm였고, 동반 손상군에서 술 전 12.7 mm, 최종 추시 6.7 mm이었다. 최종 추시에서 단독 손상군과 동반 손상군의 KT-2000슬관절계를 이용한 후방 전위는 각각 평균 3.5 mm, 4.1 mm, Lysholm score는 평균 87.4점, 81.2점, IKDC 평가표상 grade B 이상은 16례$(88.9\%)$, 23례$(85.2\%)$ 조사되었다. 결론 : 후방십자인대 재건술 후 동반 손상군이 단독 손상군에 비해 후방 전위가 좀더 잔존하는 경향을 보였으나 통계학적인 의미는 없었고 두 군에서 후방 전위의 정도와 슬관절의 기능적 평가와는 상관관계가 없었다.
13세 소아에서 후방십자인대의 경골 부착 부위의 견열 골절 - 증례보고-
이광원,이승훈,김하용,김병성,최원식,Lee Kwang-Won,Lee Seung-Hun,Kim Ha-Yong,Kim Byung-Sung,Choy Won-Sik 대한정형외과스포츠의학회 2002 대한정형외과스포츠의학회지 Vol.1 No.1
소아에서후방십자인대의경골부착부위의견열골절은발생빈도가매우낮으며그보고된경우도드물다. 이에저자들은슬관절동통과종창을주소로내원하였으며, 슬관절 후방 슬와부에압통과 종창, 혈관절증, 후방 불안정성, 경골의 후방 전위, 슬관절신전제한소견을보이고있으며 방사선학적검사상후방십자인대의경골과간후면 부착부위에견열골절을 보이는13세 소년에게서 슬관절후방슬와부를 통한 견인 봉합술(pull-out suture)로 고정하여 치료한1예의 결과를 문헌 고찰과 함께보고하고자한다. The authors report one case of isolated avulsion fracture of the tibial attachment of the posterior cruciate ligament. A 13 years old boy was admitted for right knee pain and swelling after the soccer injury on his knee. Hemarthrosis and posterior instability were present. Simple roentgenographic examination showed an isolated avulsion fracture of the tibial attachment of the posterior cruciate ligament. Open approach through the popliteal fossa was used and bony fragment was fixed into its bed using pull-out sutures. Postoperatively, a long leg cast was applied for 4 weeks. The patient was followed for 6 months. He returned to his previous activity levels. There was no residual laxity. Isolated avulsion of the posterior cruciate ligament from the tibia before the epiphyseal fusion is very rare in children. We reported one case of our experience and its result.