가방 하중의 크기와 방식에 따른 척추 정적 자세의 변화

박용현,김영관,김윤혁,Park, Yong-Hyun,Kim, Young-Kwan,Kim, Yoon-Hyuk 대한의용생체공학회 2011 의공학회지 Vol.32 No.3

The aim of this study was to investigate the alteration of lumbar spine and trunk postures on different load-carrying types and amounts under static loading. Two load-carrying types(unilateral carrying: UC vs. bilateral carrying: BC) and four different loads(0, 5, 10, and 15 kg) were randomly tested in this study. Carrying a heavy bag would affect human body posture, specifically lumbar spine curvature, which is considered as one of sources of back problems. Previous studies have not paid attention to the approach of the multisegment model of the lumbar spine and trunk. This study separated two compartments of trunk segment(the lumbar and thorax) in the analysis. The multisegment model of the lumbar spine in addition to Helen-Hayes marker set was used. Eight motion analysis cameras and a force plate were utilized. Ten male subjects(mean mass, $70.6{\pm}3.97$ kg; mean height, $178{\pm}4.18$ m) having no musculoskeletal disease participated in this study. We analyzed trunk angles in three anatomical planes and the spinal curvature in sagittal and frontal planes. Increased loading in both UC and BC significantly resulted in increases in trunk forward lean but only UC induced increases in trunk lateral lean. In addition, increased loading in BC produced flatten lumbar curvature in sagittal plane. As far as coupling motion, subjects tended to use axial rotation of the lumbar spine in transverse plane in response to increased UC loading. Finally, it is concluded that the increased static loading in UC rather than in BC tends to causes combined alterations of the spinal postures(sagittal and transverse planes together), which would be vulnerable to improper mechanical stresses on the spine.

취장농양

박용현(Yong Hyun Park),민병철(Pyung Chul Min) 대한외과학회 1971 Annals of Surgical Treatment and Research Vol.13 No.8

복벽 허니아

박용현(Yong Hyun park) 대한외과학회 1976 Annals of Surgical Treatment and Research Vol.18 No.6

호흡 곤란을 동반한 Forestier병 1례

박용현 ( Yong Hyun Park ),박융인 ( Yoong In Park ),전두수 ( Doo Soo Jeon ),홍진희 ( Jin Hee Hong ),류기찬 ( Ki Chan Ryu ),이민기 ( Min Ki Lee ),박순규 ( Soon Kew Park ) 대한결핵 및 호흡기학회 1998 Tuberculosis and Respiratory Diseases Vol.45 No.5

Monooctanoin 에 의한 담석 용해

박용현(Yong Hyun Park) 대한외과학회 1982 Annals of Surgical Treatment and Research Vol.24 No.8

10년간 경험한 담석환자 1719예의 역학적 및 임상적 특징 분석

박용현(Yong Hyun Park),김선회(Sun Whe Kim),최재운(Jae Woon Choi) 대한소화기학회 1993 대한소화기학회지 Vol.25 No.1

To clarify the epidemiological and clinical characteristics of gallstone disease in Korea and to evaluate the chronological changes of gallstone disease, the authors reviewed the medical records of 888 surgically proven gallstone patients at the SNUH from 1986 to 1990 (late 5 year.) and comparied these results with previous report (analysis of 831 gallstone patients 1981-1986; early 5 years). And we integrated this data set with that from previous report that reviewed 2,252 cases of biliary calculi in Korea from 1961 to 1980. The results are summarized as below. The proportion of gallbladder stone was approximatly 80%. It did not differ between early 5 year., and late 5 years. The proportion of CRD stone has decreased. But that of IHD stone was slightly increased in late 5-years. Female preponderance was not so striking as in westem people in both periods. The rate associated with infection decreased in late 5 years. IHD stone group was younger than that of other stones and had high residual stone rate. Chronological analysis showed that th. pattern of gallstone disease was changing to that of westernized country. These findings in changing pattern might be related to the increased standard of living in Korea, especially westernized diet.

문맥섬유증에 의한 문맥압항진증

박용현(Yong Hyun Park),김우기(Woo Ki Kim),지제근(Je Geun Chi) 대한외과학회 1979 Annals of Surgical Treatment and Research Vol.21 No.6

암을 동반한 담관낭종

박용현(Yong Hyun Park),김용일(Yong Il Kim),민병철(Pyung Chul Min) 대한외과학회 1978 Annals of Surgical Treatment and Research Vol.20 No.8

복강경 담낭절제술과 개복 담낭절제술의 비교 연구

박용현(Yong Hyun Park),김선회(Sun Whe Kim),유창식(Chang Sik Yu) 대한소화기학회 1993 대한소화기학회지 Vol.25 No.5

Laparoscopic cholecystectomy is now a well established alternative to open cholecystectomy. We compared the first 50 cases of laparoscopic cholecystectomy (L.C.) with the same number of open cholecystectomy (O.C.), which were performed at Seoul National University Hospital during different period. All cases were limited to symptomatic gallstone disease, whose GB was visualized on oral cholecystography. We excluded the cases with simultaneous CBD stone, acalculous cholecystitis, acute cholecystitis, or GB polyp. Demographic finding shows no statistical difference between two groups. Mean operation time was 128 min. in L.C. group, 87 min. in O.C, group (p <0.001). Required analgesics (Ketoprofen, 1 Arnp. =100 mg) dose was 0. 44 Amp in L.C. group, 2.04 Amp in O.C. group (p<0.001). Post-operative hospital stay was 3.26 days in L.C. group, 5.18 days in O.C. group (p<0. 001). Poet-operative hospital stay was 3.26 days in L.C. group, 5.18 days in O.C. group (p<0.001}. Solid diet was tolerated from 2.28 post-operative days in L.C. group, 5.18 post-operative days in O. C. group (p<0.001). Complication rate was 6% in L.C. group, 8% in O.C. group (p<0.001). Hospital cost was 1,643,280 Won in L.C. group, 805, 860 Won in O.C. group (p <0.001). So, we conclude that L.C. is a good standard treatment modality in gallbladder disease, of which benefits are less painful, good cosmetic results, earlier tolerable to solid diet, and short duration of hospital stay.

기니 피그에서 콜레시스토키닌 투여가 고탄수화물 , 저지방 , 저단백질식에 의한 색소성 담석의 형성에 미치는 영향

박용현(Yong Hyun Park),서경석(Kyung Suk Suh),김선희(Sun Whe Kim) 대한소화기학회 1994 대한소화기학회지 Vol.26 No.1

W e reported an animal model of pigment gallstone induced by carbohydrate-rich diet main- ly composed with rice. However, the machanisms have not been clearly understood. Under the hypothesis that high-carbohydrate diet (CHO) might induce gallstone formation via the mechanism of the relative bile stasis caused by low secretion of cholecystokin (CCK), the aim of this study was to examine whether exogenous CCK administration inhibits gall- stone formation induced by CHO in guinea pig. Male guinea pigs were divided into 3 groups(Group 1: control chow-fed group, Group 2: high carbohydrate fed group, Group 3: high cabohydrate fed and CCK injected group). High carbo- hydrate diet was 63.2% carbohydrate(45.8% in control chow), mainly composed of rice, and Group 3 received a daily injection of cholecystokinin(0.5nmol/kg). After 6 weeks of feeding, the guinea pigs were sacrificed. The stones were analyzed by infrared spectrophotornetry and gallbladder bile was analyzed by using commercial kits. In group 1, gallstone was found in one case out of 10 animals, in Group 2, 9 out of 14(p<0.05 vs Group 1) and in Group 3, 3 out of 12(p<0 05 vs Group 2). There were no differences in the concentrations of total calcium, total bilirubin, cholesterol, phospholipid and bile acid of gall- bladder bile among 3 groups. The stones were mainly composed of calcium bilirubinate, cho- lesterol, calcium phosphate, and calcium palmitate, which were similar to human calcium bilirubinate stone. The prevalence of stone formation was lowered with administration of CCK in CHO fed animals. A possible mechanism is that exogenous CCK may recover the low CCK release by CHO. It is suggested that bile stasis caused by poor CCK release which may be due to CHO be the one of the contributing factors in the formation of pigment stones in guinea pigs. (Korean J Gastroenterol 1 994; 26: 151 156)