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복재 신경의 혈관망을 이용한 원위도상 도서형 신경피부 피판술
김상수,김동철,김용범,Kim, Sang-Soo,Kim, Dong-Churl,Kim, Yong-Bum 대한미세수술학회 2001 Archives of reconstructive microsurgery Vol.10 No.1
Introduction : The goal in the management of soft tissue injuries of the lower extremity is to obtain a closed stable wound as soon as possible. Recently, An anatomic study that has shown the role of the vascular axis that follows the superficial sensory nerves in supplying the skin developed the concept of a neuroskin island flap. It has been suggested that skin island flaps supplied by the vascular network of the saphenous nerve is one of the most reliable treatment to skin defect below the knee joint. Purpose : The aim of this article is to present a clinical experience of neuroskin island flaps based on the saphenous nerve and to estimate the clinical utilities of distally based saphenous neuroskin flap. Materials and Methods : From September 1995 to May 2000, a total 12 distally based neuroskin island flaps supplied by the vascular axis of the saphenous nerve were performed to cover defects in pretibial area below the knee. Result : flap necrosis due to reactivation of existing infection developed in a case that skin defect had been on infected nonunion site of tibia. But other 11 cases survived completely without any specific complications. Conclusion : The distally based neuroskin pedicled island flap using the vascular network of the saphenous nerve are versatile and reliable and especially indicated for limited defects in pretibial area below the knee joint which are not good indications for other better-known flaps.
경년열화가 가공송전선(STACIR/AW)용 강심소재 Al Clad Invar 강선의 피로에 미치는 영향 ( 1 )
김상수,김병걸,현석규,신구용,이동일,민병욱,Kim Shang-Shu,Kim Byung-Geol,Hyun Suk-Kyu,Sin Goo-Yong,Lee Dong-Il,Min Byung-Uk 한국전기전자재료학회 2006 전기전자재료학회논문지 Vol.19 No.1
Fatigue properties of INVAR/AW wires have been investigated under the heat exposure in order to ensure stable operation and to estimate life span of their power line. In the case of heat exposure for 10000 hr, fatigue life and limit increased. For further heat exposure, fatigue limit decreased due to the decrease in yield strength. The variation fatigue of strand wire was strongly dependent on its amplitude. Also, cracks in wires of 7 strands were caused by stress concentration at the outer surface and fretting between each wire during vibration.