딥러닝 기반의 차량 주행 경로와 지도 정보를 융합하는 미래 경로 예측 기술

이석환(SeokHwan Lee),김병도(ByeoungDo Kim),금동석(DongSuk Kum),최준원(Jun Won Choi) 한국자동차공학회 2019 한국자동차공학회 학술대회 및 전시회 Vol.2019 No.11

흉요추부 골다공증성 압박골절에서 골절부 압박 진행 정도 및 골 밀도 검사 수치와의 상관관계

김정훈 ( Jung Hoon Kim ),서정국 ( Jeong Gook Seo ),안종호 ( Jong Ho Ahn ) 대한골절학회 2006 대한골절학회지 Vol.19 No.2

목적: 보존적 요법으로 치료한 흉요추부 골다공증성 압박골절 환자에서 골절부 압박 진행 정도와 골 밀도 검사 수치와의 상관관계를 알아보고자 하였다. 대상 및 방법: 2002년 3월부터 2005년 3월까지 가벼운 외상에 의해 흉요추부 골다공증성 압박굴절로 진단 받고 보존적 요법으로 치료한 30예를 대상으로 입원 당시 시행한 골 밀도 검사 수치에 따라 80% 이상, 70~80%, 60~70%, 60% 이하의 4군으로 분류하였으며 수상 당시, 1개월, 2개월, 3개월 후의 단순 방사선 사진상의 시상지수 및 전방 주체 높이를 측정하여 비교하였다. 결과: 골 밀도 수치가 낮은 군에서 수상 당시 압박의 정도가 더 심하였고 골 밀도 검사치가 낮은 군일수록 압박의 진행 정도가 크게 나타났으며 골 밀도 수치와 상관없이 각 군에서 수상 후 1개월에 압박의 진행 정도가 가장 호전되었다. 결론: 흉요추부 골다공증성 압박골절 환자에서 골 밀도 검사치가 낮은 경우에 압박의 진행을 예상하고 보다 적극적인 조기 보조기 착용 및 장기간의 골다공증 치료가 필요할 것이라 생각한다. Purpose: To evaluate whether progression of compression correlates with bone densiometry index in patients who were treated conservatively for osteoporotic compression fracture of thoracolumbar spine. Materials and Methods: Using the results of bone densiometry, 30 patients who were treated conservatively for osteoporotic compression fracture of thoracolumbar spine between March 2002 to March 2005 were categorized into 4 groups ; above 80%, 70 to 80%, 60 to 70%, and below 60%. We compared the measurements of sagittal index and anterior vertebral height from the plain radiographs taken at the time of injury and following three consecutive months after the injury. Results: Patients with lower bone densiometry index had greater amount of compression at the time of injury and more rapid progression of compression. We also found that progression of compression was lowest during the first month after injury in all groups. Conclusion: Patients with low bone densiometry index in osteoporotic thoracolumbar compression fracture are susceptible to more rapid progression of compression and should have early brace application and longer duration of treatment for osteoporosis.

일단계 전방 십자 인대 재 재건술

라호종,하정구,김상범,성정환,서정국,김진구,Ra, Ho-Jong,Ha, Jeong-Ku,Kim, Sang-Bum,Sung, Jung-Hwan,Seo, Jeong-Gook,Kim, Jin-Goo 대한관절경학회 2009 대한관절경학회지 Vol.13 No.2

목적: 본 논문의 목적은 전방 십자 인대 재 재건술의 원인을 살펴보고, 일단계 재 재건술의 수술 술기의 유용성을 알아보고자 하는데 있다. 대상 및 방법: 2004년 11월부터 2008년 7월까지 전방 십자 인대 재 재건술을 시행한 33명을 대상으로 하였다. 전방 십자 인대 재 재건술의 원인은 대퇴터널의 종적 배열이 22예, 후외방 불안정성의 간과가 7예, 재건술 후 심한 외상이 3예, 재건술 후 심부 감염이 1예였다. 재 재건술시 대퇴 터널의 위치는 10시 또는 2시 방향의 외측 방향으로 하고, 경골터널은 대부분 기존의 터널을 이용하였다. 이전 수술 때 만들어진 이상 위치의 대퇴 터널은 고정 나사못 등을 제거하고, 수술 시 동종골을 나사 형태로 만들어 골이식을 시행하였다. 결과: 추시 기간은 평균 22.2개월(12~52개월)이었으며, 추시 결과 Lysholm score, IKDC 점수는 각각 재 재건술 전 평균 $61.5{\pm}16.8$, $63.9{\pm}15.1$에서 재수술 후 $86.3{\pm}11.5$, $81.3{\pm}14.3$으로 향상되었으며, KT-2000 arthrometer는 평균 $6.0{\pm}2.2\;mm$에서 $1.6{\pm}1.4\;mm$로 줄어들었다. 결론: 전방 십자 인대 일단계 재 재건술은 양호한 고정과 임상 결과로 유용한 술식으로 사료된다. Purpose: To investigate the causes of failure on ACL reconstructions and evaluate the effectiveness of one stage revision ACL reconstructions. Materials and Methods: From November 2004 to July 2008, thirty three patients who had got revision ACL recontstructions after reruptures of ACL were evaluated. The causes of failure of ACL reruptures were 22 vertical femoral tunnels, 7 neglected PLRI, 3 severe traumas and 1 deep infection after ACL reconstruction. The femoral tunnels were aimed at the 10 or 2 o'clock position and the tibial tunnels were used with previous tunnels. Previous femoral screws from the improper femoral tunnels were removed and filled with the new allograft bones. Results: The average periods of follow up were 22.2 months (12~52 months). There was improvement on an average Lysholm knee score from $61.5{\pm}16.8$ to $86.3{\pm}11.5$, IKDC score from $63.9{\pm}15.1$ to $81.3{\pm}14.3$. Mean side to side difference was decreased from $6.0{\pm}2.2\;mm$ to $1.6{\pm}1.4\;mm$ using KT-2000 arthrometer. Conclusion: One stage revision ACL reconstruction can be a useful method with good clinical results.

축추체 병변에서의 자기공명영상 감별진단

김병직(Byung Jik Kim),서정국(Jung Gook Seo),김진구(Jin Goo Kim),안상선(Sang Seon Ahn) 대한정형외과학회 1997 대한정형외과학회지 Vol.32 No.5

제 13 차 대한골절학회 학술대회 (주연제) : 23. 고관절 치환술후 발생한 대퇴골 간부골절을 Partridge Cerclene System을 이용하여 치험한 6례 보고

김병직(Byung Jik Kim),김진혁(Jin Hyug Kim),서정국(Jung Gook Seo),김형수(Hyung Soo Kim) 대한골절학회 1991 대한골절학회 학술대회 및 초록집 Vol.- No.-

결핵성 척추염의 임상적 고찰

김병직(Byung Jik Kim),고한석(Han Suk Ko),임영(Young Lim),서정국(Jung Gook Seo),주석규(Suk Kyu Zoo),전태환(Tae Hwan Jeon) 대한정형외과학회 1993 대한정형외과학회지 Vol.28 No.6

경추 척수증에서 불충분한 전방 감압술후 추궁판 성형술 5례 보고

서정국,김정훈 인제대학교 백병원 2002 仁濟醫學 Vol.23 No.2

Objective: We have analyzed the clinical and radiological outcomes in 5 patients who showed no improvement after anterior decompression so that underwent laminoplasty. Materials and Methods: We studied retrospectively 5 patients who underwent laminoplasty after anterior decompression between January 1998 and April 1999. The mean age was 55.4 years (46 to 60). The mean duration from anterior decompression to laminoplasty was 39 months (12 to 90). We evaluated clinical symptoms and signs. Plain radiogram and MRI were taken before and after surgery. In evaluating the clinical results, the evaluation system established by the Japanese Orthopedic Association (JOA score) and Hirabayashi recovery rate was employed. Results: Postoperative radiograms showed an incresasement of body to canal ratios(average 0.79 pre-op, to 1.15 post-op.) and the mean JOA score increased from 11.8 preoperatively to 14.4 at the final follow-up with a mean recovery rate of 48%. Conclusion: It is better to do anterior decompression in patients who have one or two segments involved. Otherwise, patients who involve more than 3 segments can be managed using laminoplasty. Laminoplasty for patients who underwent incomplete ant, decompression may be useful method.

경골 Pilon. 골절의 수술적 치료 : 내고정과 외고정의 적응증 Appication of int. Fixation and Ext. Fixation

서정국,정승훈 대한골절학회 1997 대한골절학회지 Vol.10 No.1

We have reviewed 15 cases of tibial pilon fractures who have been treated operatively from May, 1990 to May, 1995 at our hospital. 1. The fractures were classified into Type I, II and III according to the system of Mast, Spiegel and Pappas and Type III were subdivided into Type A, B and C according to the system of Ruedi- Allgower. Type I was 1 case(6.7%). Type II were 8(53.3%), Type IIIA were 2(l3.3%), Type IIIB were 3(20%) and Type IIIC was 1 case(6.7%). 2. Type I, II and IIIA were treated with open reduction and internal fixation using screw or plate. 2 cases of Type IIIB were treated with open reduction and external fixation and 1 case was treated with piate. Type IIIC was treated with open reduction and external fixation. 3. Conclusively, we had good results with open reduction and internal fixation in Type I, lI and IIIA. In Type lll8, IIIC, if it was difficult to maintain of reduction with internal fixation due to severe bone loss, comminution and soft tissue injury, we could have goad results with open reduction, bone graft and external fixation including ankle joint.

퇴행성 슬관절염 환자에서 슬관절경 세척술과 경피적 다발성 골천공술의 치료 결과분석

박정규,김진구,김병직,임영,고한석,서정국,안치성 대한슬관절학회 1997 대한슬관절학회지 Vol.9 No.1

42 knees with degenerative arthritis underwent arthroscopic lavage and 7 knees underwent arthroscopic lavage combined with multiple bone drilling in between 1994 and 1995 and followed average 12 months. Clinical evaluation using the hospital for special surgery knee scores(HSS scores) was done at last follow up and classified into 4 groups: excellent(90-99), good(80-89), fair(70-79) and poor(less than 70). The results were as follows: 1. Of the 42 knees of the lavage group, 6 knees(16%) was excellent, 14 knees (33%) good, 17 knees(40%) fair and 5(11%) knees poor. Success group (Excellent & Good) were achived in 20 knees(49%). 2. Of 17 knees treated with arthroscopic lavage comhined with multiple bone drillig resulted in excellent in 9 knees(53%), good in 4 knees(23%), fair in 2 knees(12%) and poor in 2 knees(12%). Success group were achived in 13 knees(76%). In conclusion, we believe that multiple bone drilling in conjunction with arthroscopic lavage has more favorable effect on the pain relief for degenerative osteoarthritis of the knee than arthroscopic lavage only.

교합성금속정을 이용한 상완골 간부골절의 치료

김병직,주석규,서정국,윤윤성 대한골절학회 1994 대한골절학회지 Vol.7 No.2

The ideal treatment for humeral shaft fractures has been a topic of discussion for long times. Conventionally conservative methods like hanging arm cast, coaptation splint and functional brace were used. The operative treatment included plate and screws, intramedullary rods were used. The many known advantage of interlocking nails used in femur and tibia fractures were recently applied to humeral shaft fracture. Among them Seidel nail developed by Dr, Seidel in 1989 was inserted by splitting the rotator cuff and distal locking by expanding the distal tip of the nail through a long screw driver. This study is a preliminary report of first l0 cases of humeral shaft fracture which was internally fixed with Seidel nail during the period of September 1992 to September 1993. The findings are as follows. 1. 9 out of 10 cases(90%) achieved union. 2. Average union time was 10 weeks. 3. According to Neer's shoulder functional score, 8 patients(80%) achieved either satisfactory or excellent shoulder function postoperatively. 4. 2 complications occurred. One nonunion and one distal fixation failure. Since fixation of humeral shaft fracture, by Seidel nail can achieve high uruon rate and good shoulder function, it should be considered as one of many methods to treat humeral shaft fracture.