연부조직 결손을 동반한 감염성 경골 불유합 및 골결손의 치료(유리피판술과 동시에 시행한 Ilizarov기구를 이용한 골연장술의 유용성)

송준영,정현균,서승용,장현호,Song, June-Young,Jung, Heun-Guyn,Seo, Seung-Yong,Jang, Hyun-Ho 대한미세수술학회 2005 Archives of reconstructive microsurgery Vol.14 No.1

Purpose: The purpose of this study was to evaluate the effectiveness of internal transport using Ilizarov apparatus with free flap surgery for infected tibial nonunion. Materials and Methods: We reviewed 8 patients of infected tibial nonunion treated with internal transport using Ilizarov apparatus and free flap surgery. Seven of eight patients were available for at least 1 year follow-up. All patients were male. The mean age at the time of the surgery was All fractures were Gustilo's type III B open fracture. The mean length of the bone defect was 8.5 cm. All used flaps for covering the soft tissue defect were free rectus abdominis muscle flap. We evaluated bone and functional results with use of the Paley and Catagni's classification. And we classified the complication with use of the Paley's classification. Results: Acceptable length and solid union of bone was achieved in all cases. The mean size of the bone length was 7.2 cm. The mean healing index was 69.5 days/cm. All but one case needed bone graft at docking site. All flaps were survived. There was no recurrence of infection. According to Paley and Catagni's classification, all cases showed excellent or good results. Complications were pin tract infection in 3 cases, persistent pain in 2 cases and limitation of joint motion in 2 cases. Conclusion: Simultaneous free-tissue transfer and Ilizarov distraction osteogenesis was thought to be an attractive treatment modality for infected nonunion of the tibia.

역행성 요측 전완부 피판을 이용한 수지 절단부 재건

송준영,정현균,서승용,장현호,Song, June-Young,Jung, Heun-Guyn,Seo, Seung-Yong,Jang, Hyun-Ho 대한미세수술학회 2005 Archives of reconstructive microsurgery Vol.14 No.1

Purpose: We analyzed the result of the radial forearm island flap for the reconstruction of amputated fingers. Materials and Methods: From March 2001 to February 2004, we assessed two patients who could not be able to receive replantation and six patients who had necrosis of the fingers after replantation. There were six men and two women. The mean age was 42 years. The average duration of follow-up was 26months. Results: All flaps were survived. Two patients needed bone graft. Two patients needed curettage due to osteomyelitis. All patients needed fat reduction procedure. No patients needed amputation of reconstructed digit due to complication. Conclusion: Radial forearm island flap seems useful operation procedure for severely amputated digit or necrotized digit after replantation.

유리 조직 이식술을 이용한 당뇨병성 족부 궤양의 치료

송준영,김기수,김희동,박인석,Song, June-Young,Kim, Ki-Soo,Kim, Hee-Dong,Park, In-Suk 대한미세수술학회 2001 Archives of reconstructive microsurgery Vol.10 No.2

Diabetic foot ulcer is a serious complication which result from long-standing diabetes. Especially, severe infected diabetic foot ulcer results in unwanted lower extremity amputation. The diabetic patient is considered the relative contraindication for microsurgery because of the severe peripheral vascular disease. Recently, microvascular free tissue transfer technique applied to diabetic foot ulcer. It is well known that free tissue transfer provides immediate soft tissue coverage and control of infection. So it is possible that preservation of the lower extremity through free tissue transfer. A retrospective study of diabetic patients who had infected foot ulcer from 1999 to 2000 with foot defects reconstructed with free tissue transfer were reviewed. Thirteen patients were studied with mean follow-up of 12.7 months. There were two deaths during follow-up period. There were two failures after free flap surgery. All eleven survived patients were ambulatory. There was no recurrence of ulcer. No patient need amputation above the ankle joint. We have found that free tissue transfer for infected diabetic foot ulcer is very effective surgical technique. Careful patient selection and regular follow-up is important.

인공고관절 치환술 후 석회화 음영 벽을 가진 골반 내 종물

송준영(June Young Song),정영율(Young Yool Chung),서유석(Yu Seok Seo),김기수(Ki Soo Kim) 대한정형외과학회 2006 대한정형외과학회지 Vol.41 No.5

저자들은 재치환술이 필요한 2예의 인공 고관절에서 증상이 없는 석회화 음영 벽을 가진 골반 내 종물 2예를 경험하였다. 1예의 종물은 비구컵 고정 나사못을 따라, 또 다른 1예는 골용해에 의한 내측벽 골 결손을 통해 관절과 연결되어 있었다. 저자들은 종물을 절제하지 않고 연결통로를 통해 배액을 실시하고 파손된 삽입물을 재치환하였다. 재치환술 2년 후 종물의 크기는 증가하지 않았으며, 증례 2는 두꺼워진 석회화 음영 벽을 가졌다. 인공 고관절 치환술 후 발생하는 골반 내 종물의 치료로 증상이 없는 경우 절제술이 반드시 필요한 것은 아니라고 생각한다. We experienced two cases of asymptomatic intrapelvic masses with calcific density walls in failed cementless total hip arthroplasties. The intrapelvic masses communicated with the hip joint along the screw in one case and a medial wall defect in the other case. Instead of excision, the masses were drained and the failed components were revised. Two years after revision arthroplasties, the intrapelvic masses have not increased in size; and there was a thick calcific density wall in the second case. We conclude that the excision of an intrapelvic mass is not always mandatory when it is symptomless.

USUF 챔버 해석 모델을 이용한 커튼 에어백 필링 호스 파손 해석

송준영(June-Young Song),하원필(Won-Pil Ha),여태정(Tae-Jung Yeo) 한국자동차공학회 2008 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-

PMM에 구속된 부분 유한요소모델을 이용한 측면 에어백 개발 대응 수치 해석 기법

송준영(June-young Song),하원필(Won-Pil Ha),여태정(Tae-Jung Yeo) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-

Multi-body models with compliant planes/ellipsoids and full vehicle FE-mesh models have been used for side impact numerical analyses for development of SAB/CAB. Multi-body models can not provide enough amount of information in the latter stages of development. One the other hand, full vehicle FE-mesh models needs much computing resources, so it is a burden to do FVA with each airbags. Recently, FE-mesh model of a substructure with PSM from the results of FVA starts to be used in evaluating airbags. This efficient method has reciprocal relationships with FVA and it can be a problem for module companies who are hard to get FVA results. For a breakthrough, FE Analysis of a substructure restrained by PMM is newly developed. Characteristics, procedures, and some examples of this new method are introduced. This method is proved to be more economical and accessible for module companies than FVA and more informative than the multi-body with ellipsoids analysis.

슬와낭종과 슬관절내 병변의 관계

송준영(June Young Song),정병오(Byung Oh Chung),안용철(Yong Chul Ahn),고승희(Seung Hee Ko) 대한슬관절학회 2001 대한슬관절학회지 Vol.13 No.1

Purpose: To evaluate the clinical symptoms and the associated intra-articular disorders of the polpliteal cyst. Materials and Methods: We studied 56 patients, 60 cases of the popliteal cysts which. Had been treated with excision of the cyst after arthroscopy between May 1991 and February 2000. Arthroscopic findings and clinical results of the patients who had popliteal cyst were evaluated. Results: Forty nine patients of the sixty patients of who had popliteal cyst showed intra-articular disorders. Tear of the meniscus and patello-femoral arthrosis with cartilage lesions were the most frequent intra-articular lesions. In 4 cases, recurrence of the popliteal cyst was noted. Two patients had tear of the meniscus and two had no intra-articular disorders. Conclusion: This study revealed that popliteal cysts frequently combined with intra-articular disorders. Arthroscopy of the knee joint seems worthwhile method for the patients who had popliteal cyst

수산화 인회석 피복 비구컵의 조기 방사선학적 해리 소견

송준영 ( June Young Song ),정현균 ( Heun Guyn Jung ),서유석 ( Yu Seok Seo ),김기수 ( Ki Soo Kim ),정영율 ( Young Yool Chung ) 대한고관절학회 2006 Hip and Pelvis Vol.18 No.1

목적: 수산화 인회석 피복 비구컵을 이용한 인공 고관절 전치환술 후 실패를 조기에 판단할 수 있는 방사선학적 및 임상적 소견을 알아보기 위하여 이 연구를 하였다. 대상 및 방법: 1992년 4월부터 1996년 11월까지 수산화 인회석 피복 비구컵을 이용하여 인공 고관절 전치환술을 시행한 204예 중 재치환술을 시행한 41예를 연구 대상으로 하였다. 재치환술을 실시한 41예의 방사선사진에서 비구컵 주위 방사선 투과성선, 비구컵 각도 변화를 관찰하였다. 비구컵의 해리는 방사선 사진에서 2 mm이상의 전위나 5도 이상의 각 변화가 있을 때 또 수술 소견상 비구컵의 움직임이 있을 때로 정의하였다. 결과: 41예 중 12예에서 비구컵 주위 방사선 투과성선이 관찰되었으며, 술 후 평균 55.4개월에 제 3영역에서 가장 많이 관찰되었다. 방사선 투과성선이 관찰된 12예 중 8예는 방사선 추시상 해리가 발생하였으며, 4예는 수술 소견상 해리이었다. 방사선학적 해리는 방사선 투과성선이 처음 관찰된 후 평균 28.8개월에 발생하였다. 서혜부 동통은 비구컵 해리로 재치환술을 실시한 19예 중 18예에서 관찰되었다. 결론: 비구컵 주위 진행성 방사선 투과성선은 수산화 인회석 피복 비구컵의 실패를 조기에 판단 할 수 있는 가장 중요한 방사선학적 소견이었다. Purpose: The purpose of our study is to examine early radiographic findings and clinical signs of failure of the microstructure surface HA-coated acetabular cup. Material and methods: This study included 41 revisions of 204 THA with hydroxyapatite-coated acetabular cup from April 1992 to November 1996. Radiolucent line around cups, change in the cup angle and osteolysis were evaluated in serial radiographs. Acetabular cup was defined as loosening if any movement occurred at the bone and socket interface by manual rotation and extension force intraoperatively or migration of more than 2 mm and change of the cup angle by more than 5 degrees in radiographs. Results: The radiolucent line was observed in 12 of the 41 hips at an average of 55.4 months postoperatively and was most commonly located in zone III. All of the 12 hips showing radiolucent lines were classified as loosening by radiographically in 8 cases and intraoperatively in 4 cases. Radiographic loosening occurred at an average of 28.8 months after the appearance of a radiolucent line. Inguinal pain was noted in 18 of the 19 cases revised for acetabular cup loosening. Conclusion: The most important radiographic finding for the early diagnosis of loosening was progressive radiolucent lines, which occurred most frequently in zone 3.

다챔버 커튼 에어백 모델에 관한 연구

송준영(June Young Song),하원필(Won Pil Ha),박승경(Seung Kyung Park) 한국자동차공학회 2004 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-

Numerical analysis models of curtain airbags, based on the uniform pressure assumption, are usually composed of one chamber. Deployed state of a curtain airbag can be well simulated with one chamber. But there are some important things that can't be evaluated by this one chamber model. For example, the gas distribution in the early stage of bag deployment and diffusion of gas when CAB is exposed to external forces can't be known. The diffusing characteristic of gas in the early stage is essential to predict the CAB deploying motions. For this, a multi chamber model is introduced. The gas distribution results of multi chamber and a model of MADYMO gas flow module are compared. In addition to that, a pendulum test result is used to know the gas diffusing characteristics when CAB is exposed to external forces. The results from multi chamber model, one chamber model and real tests are compared for this.

국소 피판술을 이용한 당뇨병성 족부 궤양의 재건

송준영(June Young Song),김기수(Ki Soo Kim),고승희(Seung Hee Ko),최용수(Yong Soo Choi),정영률(Young Ryool Chung),김희동(Hee Dong Kim),박봉희(Bong Hee Park) 대한정형외과학회 2003 대한정형외과학회지 Vol.38 No.3