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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.
Stearic acid로 표면 코팅된 탄산칼슘의 폴리프로필렌에서의 분산
송준영,정연수,함민경,곽영제,정영진,Song, Junyoung,Jung, Yoen-Su,Ham, Min-Kyoung,Kwark, Young-Je,Jeong, Young-Jin 한국섬유공학회 2012 한국섬유공학회지 Vol.49 No.3
Calcium carbonate ($CaCO_3$) with 15~40 nm average diameter was compounded with polypropylene (PP) in a melted state to form composite materials. To enhance the dispersibility in PP, the surface of the $CaCO_3$ was coated with hydrophobic stearic acid (SA). The SA-coated $CaCO_3$ (SA-$CaCO_3$) showed hydrophobic nature, which resulted in rapid precipitation in water. When melt-compounded with PP, SA-$CaCO_3$ was uniformly distributed throughout the PP matrix, while the uncoated $CaCO_3$ formed aggregated structures in the PP. At up to 5 wt% of SA-$CaCO_3$ content, the composites showed well-dispersed structure, although some level of aggregation was observed in the composites with 10 wt% of SA-$CaCO_3$. The dispersibility improved with a repeated process of compounding. The melting and crystallization temperatures of PP increased with incorporation of $CaCO_3$. The enthalpy of the transitions also increased and the full-width of half maximum of the crystallization peak decreased. However, SA-coating did not produce additional effects on the crystallization behavior of PP. These results showed that the $CaCO_3$ acted as crystal nuclei.
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.
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.
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.
우리나라 양식 넙치(Paralichthys olivaceus) 육성어와 종묘의 지역별 Kudoa septempunctata 감염 현황
송준영 ( Jun Young Song ),김민정 ( Min Jeong Kim ),최혜승 ( Hye Sung Choi ),정승희 ( Sung Hee Jung ) 한국수산과학회 2014 한국수산과학회지 Vol.47 No.5
A nationwide survey was conducted to study the rate of Kudoa septempunctata parasitization in cultured olive floun-der, Paralichthys olivaceus, in Korea in 2013. Of 1107 olive flounder sampled randomly from 89 culture farms in five different regions in Korea, K. septempunctata was detected only in Jeju, where 10 of 318 fish (3.14%) were PCR positive, with genomic concentrations of 4.67×105 to 1.48×1011 rDNA copies/g by real-time PCR. Of the ten Kudoa-positive fish, K. septempunctata spores with 5-7 polar capsules were detected only in four fish. No samples of K. septempunctata were detected in olive flounder from the other regions surveyed. Furthermore, K. septempunctata was not detected in 326 samples of olive flounder seeds sampled from 39 hatcheries in seven different regions in Korea. Therefore, the parasite infection is restricted to Jeju and K. septempunctata infection is not spread from hatcheries.
다발성 전이를 동반한 대장암의 발견 전에 진단된 식도이완불능증
송준영 ( Jun Young Song ),박무인 ( Moo In Park ),문원 ( Won Moon ),최정민 ( Jung Min Choi ),김도현 ( Do Hyun Kim ),유홍준 ( Hong Jun You ),김규종 ( Kyu Jong Kim ),박선자 ( Seun Ja Park ) 대한소화기기능성질환·운동학회 2008 Journal of Neurogastroenterology and Motility (JNM Vol.14 No.1
Achalasia is characterized by failure of the lower esophageal sphincter to relax normally during swallowing and aperistaltic movement of the esophageal body. The large majority of achalasia is idiopathic, a disorder of unknown etiology with ganglion cell degeneration of esophageal myenteric plexus. Only small proportion of achalasia is secondary induced by malignant tumors. To date, the achalasia in patiet with colon cancer has not been reported. We report a case of achalasia diagnosed before the detection of colon cancer with multiple metastasis.