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노동근 ( Donggeun Roh ),한상진 ( Sangjin Han ),최화진 ( Hawjin Choi ),신항식 ( Hangsik Shin ) 한국정보처리학회 2017 한국정보처리학회 학술대회논문집 Vol.24 No.1
본 연구는 차동 용량형 섬유 압력 센서를 개발하고, 이를 깔창에 부착하여 보행 측정에 응용하는 것을 목적으로 한다. 차동 용량형 섬유 압력 센서는 3장의 전도성 섬유 사이에 2장의 절연체를 위치시키는 형태로, 5 cm × 5 cm × 0.23 cm (가로× 세로 × 두께) 크기로 제작하였다. 커패시턴스를 측정하기 위해 커패시턴스-디지털 변환칩(AD7152), ATMega328로 구성된 시스템을 제작하였고 PC로 데이터를 전송하여 모니터링을 수행하였다. 센서의 힘-커패시턴스 변화 특성 평가를 위해 센서에 가하는 중량을 65 kg까지 5 kg 씩 증가시켜 가며 커패시턴스 변화를 측정하였다. 실험 결과, 무게에 따라 커패시턴스가 증가하는 것을 확인하였다. 보행 측정 가능성을 평가하기 위해 센서를 깔창에 부착한 후 보행 신호를 측정하였으며, 그 결과 보행에 따라 센서의 커패시턴스 값이 변화하는 것을 확인하였다. 이로부터 제작한 차동용량형 섬유 센서는 보행 측정에 활용할 수 있는 가능성을 확인하였다.
정영기,유정한,박용욱,노동근,하성한,Chung, Yung-Khee,Yoo, Jung-Han,Park, Yong-Wook,Noh, Dong-Geun,Ha, Sung-Han 대한족부족관절학회 1997 대한족부족관절학회지 Vol.1 No.2
Tarsometatarsal fracture-dislocation is uncommon but severe lesion. Since this lesion is sometimes difficult to recognize by roentgenography, it is easily overlooked. Three patients were treated with open reduction and internal fixation with 3.5 mm cannulated screw and K-wire, two had treatment with open reduction and internal fixation with 3.5 mm cannulated screw only and two had treatment with dosed reduction and short leg cast only between January 1994 and May 1996. The duration of follow-up ranged from twelve to twenty-nine months after the diagnosis. Results were assessed by a subjective questiormaire, physical examination, and radiographic analysis. Multiple fixation techniques for maintaining the reduction of tarsometatarsl joint have been introduced. We recent]y used the 3.5 mm cannulated screw for internal fixation of the tarso-first and second metatarsal fracture-dislocation. We think cannulated screw fixation has several advantages; 1. The cannulated screw fixation is more rigid than the K-wire fixation. 2. There is an decreased risk of screw breakage with early weight bearing. 3. It is possible to compress the involved joints, if necessary. There were no disability in all patients. One patient who was treated with delayed open reduction and internal fixation with 3.5 mm cannulated screw and K-wire had a radiographic mild degenerative arthritis. And one patient who was treated with dosed reduction and short leg cast had a mild metatarsus adductus. But. these two patients were symptom free. There was no correlation between the severity of the diastasis and the patient s functional result.
척추수술에서 이식골 공여부의 동통감소를 위한 임상적 연구
박인헌,이기병,송경원,이진영,노동근 대한척추외과학회 1995 대한척추외과학회지 Vol.2 No.1
Use of autogenous bone graft in orthopaedic practice is common, and various method have been tried to improve the compilcation of the donor site of the bone graft. The authors have experienced that the donor site pain of the autogenous bone graft is more severe and prolonged than main operation site pain. We have used a method to fill bone cement into the donor site in order to relieve donor site pain, then observed the nature of the pain and complication. The study was done to the patients that spinal fusion was performed with autogenous bone graft which extracted from iliac tuberosity in the period from May 1992 to February 1993. Clinical assessment of these cases was made according to the degree and duration of the pain on 20 cases. which were extracted bone from both iliac tuberosity, and one side was filled with bone cement and the other sides were not, and then compared the degree of the pain for each case. The degree of the pain was classified with subjective pain at resting and walking, and the change of the pain after postoperative 2 weeks, 6 weeks, 3 months, 12 months. 1.The group without using bone sement : pain persisted at resting and walking before 3 months. but only for walking after 3 months postoperatively. 2.The group with using bone cement : donor site pain was negligible during resting phase, but some pain during walking. 3.The group with using bone cement : pain was not devleloped over 75% of patients after postoperative 3 months. The group without using bone cement : pain was not developed 25% of patients at postoperative 3 months. 4.The difference of overall degree of pain was significant until postoperative 6 weeks(p<0.05). and showed statistically difference until postoperative 3 months(p<0.01), but there was no difference of pain between both donr site was not observed on pain after postoperative 6months. 5.Average bleedingwas 13.7 cc for the group for whom bone cement was used, and 47.2 cc for the group for whom bone cement was not used.