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장 족지 굴건 막의 결절종에 의해 유발된 족근 관 증후군의 치료 - 1예 보고 -
양승욱,신승준,송무호,최선진,Yang, Seung-Wook,Shin, Seung-Joon,Song, Mu-Ho,Choi, Sun-Jin 대한족부족관절학회 2000 대한족부족관절학회지 Vol.4 No.2
Tarsal tunnel syndrome caused by ganglion as space occupying lesion is unusual and known that excellent result can be expected from surgical treatment carried out soon after onset of the condition. The object of the current study is to report our experience of tarsal tunnel syndrome caused by ganglion of flexor digitorum longus tendon sheath treated with operative management in a 39 year-old man with a review of the literature.
양승욱(SEUNG Wook Yang),신승준(Seung Soom Shin),송무호(Moo Ho Song),황진연(Jin Yeun Hwang) 대한고관절학회 1999 Hip and Pelvis Vol.11 No.3
Purpose : This study was conducted to analyze of the effects of corticosteroid dosage and other clinical factors on the development of avascular necrosis(AVN) of the femoral head after renal trars-plansplantation(KTN). Materials and Methods : From Aug. 1990 to Dec. 1997, 272 renal transplantations have been per-formed ; 15 patients demonstrated AVN of the femoral head. For a cemparative study 15 normal adults were selected. We compared clinical parameters, and checked the mean dosage of the steroid and mean dosage of steroid per body weight every 4 weeks, compared the cumulative total dosage taken for 76 weeks, and compared the mean dosage until AVN of the femoral head was diagnosed. Results : The incidence of AVN of the femoral head after KTN was 5.5% (15/272), and the inci-dence in men was higher than that in women by 6.7% to 3.7%. Other factors such as age, weight, blood type, the cause of renal failure and the type of donor had no correlation with the prevalence of AVN. The mean dosage of corticosteroid taken for 52 weeks and the mean dosage per body weight taken for 32 weeks since KTN showed a significant difference between the two groups. The clinical symptoms appeared 13.5 months after KTN, and 80% of the cases was detected within 12 months. The radiologic findings were detected 15.3 months after KTN on the average, 2.2 months after the symptoms had appeared. Conclusion : This study showed that rejection episodes and high dosage of steroid were responsi-ble for the development of AVN of the femoral head. For early diagnosis in the risk group, even if no symptoms were detected, we suggest that more active and regular observation are needed for 12 months after KTN, during the time when the patient is vulnerable to the attack of AVN of the femoral head.
HILS 기반의 OBD Simulation에 관한 연구
박승현(Seung-hyun Park),권오진(Oh-jin Kwon),양승욱(Seung-wook Yang) 한국자동차공학회 2004 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
The increasing complexity of ECU system makes high demands of the vehicle manufacturers who are responsible for the quality and safety for their vehicles. The current testing methods, however, which are carried out with specially equipped vehicles are time-consuming and inefficient. And, it is hard to make the testing conditions which guarantee safe operation of the ECU at all possible operating conditions. The burden of functional verification which related with OBD system is also increased by a lot of electrical parts and emission regulations. Also, the monitoring of catalytic converter performance is the main feature of OBD systems. This study shows the effect of changing the oxygen storage capacity during catalytic converter monitoring on the HILS environment that provides a real-time coupling of the physical hardware and computer simulation. A relation between catalyst aging time and oxygen storage capacity has been developed to provide the benefit tool on the optimum catalytic converter design.
비골이식술로 치료한 요골 원위부의 거대세포종 - 증례 보고 -
정학영,양승욱,신승준,송무호,승형준,Jeong, Hak-Yeong,Yang, Seung-Wook,Shin, Seung-Joon,Song, Moo-Ho,Seung, Hyeong-Joon 대한근골격종양학회 1998 대한골관절종양학회지 Vol.4 No.2
Giant cell tumor was described by Sir Astley Cooper in 1818. This tumor is considered to be a benign tumor but has problems of recurrence and metastatic change after treatment. Methods of operative treatment of this tumor have included currettage, currettage and bone graft, excision, resection, excision and graft and amputation. We experienced a case of giant cell tumor which involved the distal part of right radius and treated by wide excision and fibular graft. The postoperative courses have been satisfactory because of no recurrence or malignant change. After 6 years and 1 month follow up, the patient was able to return to daily life without any problem.