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김주성,정준모,백구현,정문상,Kim, Joo-Sung,Jung, Jun-Mo,Baek, Goo-Hyun,Chung, Moon-Sang 대한미세수술학회 1997 Archives of reconstructive microsurgery Vol.6 No.1
Latissimus dorsi(LD) muscle is the largest transplantable block of vascularized tissue. Since LD free flap was introduced in 1970's, this flap has been widely used for the reconstruction of large soft tissue defect of the limb. From 1981 to 1996, we had experienced 37 cases of LD free flap. Serratus anterior muscle was combined with LD in three of them whose defects were very large. The average age of the patients was 31 years(range : 4-74 years), and thirty one patients were male. Trauma was cause of the defect in every case. For the recipient sites, the foot and ankle was the most common(22 cases); and the knee and lower leg(11 cases), the elbow and forearm(2 cases), the hand(2 cases) were the next. The duration of follow-up was averaged as 16 months(range: 6 months-12 years). Thirty one cases(84%) out of 37 were successful transplantations. In one case the failure of the flap was due to heart attack and subsequent death of the patient. One failure was caused by sudden violent seizure of the patient who had organic brain damage. Immediate reexploration of the flap was performed in 4 patients, and the flap survived in three of them. There was one necrosis of the grafted split-thickness skin on the survived LD flap. LD free flap was considered as one of the good methods, for the reconstruction of the large soft tissue defect of the limb.
손톱위허물 피판술을 이용한 절단 환자의 손톱 길이 연장술
이충훈(Chung Hoon Lee),정준모(Jun Mo Jeong),김진호(Jinho Kim),임수택(Soo Taek Lim),유광현(Kwang Hyun Yoo),박루뽀(Ru Ppo Park),김민범(Min Bom Kim) 대한정형외과학회 2009 대한정형외과학회지 Vol.44 No.4
목적: 수지 첨부 절단으로 짧아진 손톱 길이를 늘이는데 손톱위허물 피판술이 효과적이면서도 간단하고 안전한 방법으로 생각하여 보고하고자 한다. 대상 및 방법: 2006년 11월부터 2008년 4월까지 수지 첨부 절단 손상 환자 25명에 대해 손톱위허물 피판술을 시행하였고, 수술의 결과를 평가하였다. 환자 자신의 외관상의 만족도를 설문에 의해 조사하였고, 손톱의 길이를 자로 측정하여 수술 전의 손톱길이와 반대편 손톱의 길이와 상대적 비율을 비교하였다. 결과: 평균 수술시간은 14분(10-19분)이었다. 전 예에서 피판은 생존하였고 감염, 피판의 울혈 등 특별한 합병증은 없었으며, 손톱에 추가 변형은 없었다. 추시 기간은 평균 5개월(3-18개월)이었으며, 손톱은 평균 0.35 ㎝가 연장되었다. 최종 관찰 시 미용상 만족도는 평균 95.5점이었으며 최초 손톱 길이의 소실이 적은 환자에서 만족도는 더 높았다. 결론: 손톱위허물 피판술을 이용한 손톱 연장술은 수지 첨부 절단 환자의 짧아진 손톱을 간단하고 안전하면서도 외관상 높은 만족도를 보이는 유용한 술식이다. Purpose: We wanted to introduce a nail lengthening technique with an eponychial flap for treating finger tip amputation, and we review the relevant literature. Materials and Methods: Twenty-five patients who received eponychial flap surgery between November 2001 and April 2006 were enrolled in this study. Retrospectively, the patients were asked, by using a questionnaire, about their satisfaction with their nail shape and length. The preoperative findings and the findings at the last follow up and the contralateral finger nail lengths were measured with a ruler and those were all compared according to the percentage of change. Results: The average operation time was fourteen minutes (range: 10 to 19 minutes). All the flaps survived and there was no infection, congestion of the flap, or additional deformity of nail. The average follow up period was five months. The nails were lengthened an average of 0.35 ㎝. The last follow up questionnaire showed that the patients were satisfied with their nail's appearance with an average score of 95.5 points. Conclusion: Nail lengthening using an eponychial flap is a convenient, safe and aestheticall pleasing procedure.
SM20C 摩擦熔接部의 노치 깊이에 따른 機械的 性質 硏究
이세경(Se-Gyoung Lee),정준모(Jun-Mo Chung),박천봉(Chun-Bong Park),민택기(Taeg-Ki Min) 한국생산제조학회 2007 한국생산제조학회지 Vol.16 No.1
The present study examined the mechanical properties of the friction welding zone of solid and hollow shafts made with SM20C according to the depth of the notch. Friction welding was conducted at welding conditions of 2,000 rpm, friction pressure of 60㎫, friction time of 1.4 seconds, upset pressure of 100㎫, and upset time of 2.0 seconds. In the tensile strength test, the tensile strength decreased as the depth of the notch increased. Tensile strength was moderately high when the depth of the notch was 2mm. The tensile strength of the welding zone increased as the friction revolution radius increased, because the latter led to the generation of adequate friction heat. According to the hardness test, hardness likewise increased as the friction revolution radius increased. In the bending test, the bend strength of the solid shaft decreased when the depth of the notch was 0-2㎜ but increased when the latter was 3-5㎜. With regard to the hollow shaft, the bend strength drastically decreased when the depth of the notch was 3-4㎜. Upon examination it was found that the microstructure became finer when the friction revolution radius increased.
이현정 ( Hyun Jeong Lee ),정준모 ( Jun Mo Chung ),서은희 ( Eun Hee Seo ),전성우 ( Seong Woo Jeon ) 대한내과학회 2008 대한내과학회지 Vol.75 No.6
Background/Aims: Stomach cancer is the most common malignancy and one of the leading causes of cancer-related death in Korea. The early diagnosis and treatment of gastric cancer are very important because the prognosis of early gastric cancer is excellent. Gastric screening may provide an opportunity to detect asymptomatic early gastric cancer. We analyzed the characteristics of gastric cancer diagnosed with a health screening test to evaluate the usefulness of a screening program for gastric cancer. Methods: We retrospectively reviewed the clinicopathological characteristics of 111 gastric cancer patients diagnosed using gastric endoscopy as a gastric screening test at the Health Promotion Center of Kyungpook National University Hospital from July 1997 through December 2005. Results: The incidence of gastric cancer was 0.38% and the mean patient age was 58.5 years old. The proportion of early gastric cancer was 73% of all gastric cancer. In 55 cases, constituting 49.6% of all gastric cancer and 68% of early gastric cancer, the lesions were confined to the mucosa. The most common macroscopic types were type IIc in early gastric cancer and Borrmann type 3 in advanced gastric cancer. There were significant positive correlations between lymph node metastasis and both the depth of tumor invasion and size of the lesion. The 5-year survival rates are 82.7% in total gastric cancer and 97.2% in early gastric cancer. Conclusions: Gastric cancer detected during health screening has a favorable prognosis because gastric cancer confined to the mucosa predominates and early gastric cancer detected at screening has a lower incidence of metastasis to regional lymph nodes. (Korean J Med 75:665-672, 2008)