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외상성 주관절 변형과 동반된 지연성 척골 신경마비의 치료
이화성,김호태,송석환 대한골절학회 1998 대한골절학회지 Vol.11 No.2
Thirty-five patients with tardy ulnar nerve palsy caused by cubitus valgus (33 cases) and varus (2 cases) deformities were retrospectively studied. All patients had a history of old fracture on the distal humerus during childhood. The mean interval between the previous fractures and the onset of ulnar neuropathy was 19 years. The severity of nerve palsy was classified as McGowan's grade I in 24 patients, grade II in 8 patients, and grade III in 3 patient.. The mean carrying angle was average 29 degrees in 33 cases with cubitus valgus and it was decreased to average 11 degrees postoperatively, hut the angle was average -23 degrees preoperatively in 2 cases with cubitus varus and it was corrected to average 9 degrees postoperatively. The cause of palsy was analysed by mechanical stretching in 11 cases, compression by a fibrous band between the two heads of flexor carpi ulnaris in 8 cases, and diffuse fibrous adhesion around the ulnar tunnel in 5 cases, All patients was treated with supracondylar closing wedge osteotomy accompanied with anterior ulnar nerve transposition in l3 patients, corrective osteotomy only in 12 patients, and anterior ulnar nerve transposition only in 10 patients. Their end results were analysed as good in 24 cases, fair in 8 cases, and poor in 3 cases within average 6 months after the operations (4 to 13 months). The poor results was obtained in 3 cases out of 9 cases with corrective osteotomy group (33.3%). Conclusively, a tardy ulnar nerve palsy caused by post-traumatic elbow deformities should be corrected with anterior ulnar nerve transposition with or without corrective closing wedge osteotomy hut not by corrective osteotomy only, because of compressive neuropathy by diffuse fibrous adhesion or bands of two heads of FCU around the ulnar tunnel in elbow.
이화성,권순용,서은미,김용희,김성수 한국고분자학회 2011 Macromolecular Research Vol.19 No.1
Polymeric calcium phosphate cements (PCPCs) derived from biodegradable polyamino acids, such as polyaspartic acid (PAA) and poly-γ-glutamic acid (γ-PGA), were prepared in an attempt to improve their cohesion strength and injectability. The characteristics of the calcium phosphate cements (CPCs), such as dynamic viscosity, paste injectability, initial setting time, compressive strength and cell compatibility, were assessed. The dynamic viscosity increased significantly with γ-PGA incorporation but decreased with PAA incorporation. The injectability increased with the concentration of polyamino acids and that of the CPCs mixed with γ-PGA reached 94%. The initial setting time decreased with the γ-PGA concentration in the cement liquid and reached approximately 10-15 min when the γ-PGA concentration was 1-2 wt%. The compressive strength (CS) of CPCs after 1 week-incubation decreased with the incorporation of PAA and γ-PGA. γ-PGA incorporation deteriorated the CS more than PAA incorporation because the dissolution of alpha-tricalcium phosphate (α-TCP) was retarded. Saos-2 cells grown on CPCs with polyamino acids spread more than those grown on the CPC without them.
일부 초등학생의 비만도에 따른 칼슘과 철의 섭취상태와 혈청 농도에 관한 연구
이화성,김은영,배윤정,승정자 숙명여자대학교 건강·생활과학연구소 2006 生活科學硏究誌 Vol.- No.22
The purpose of this study was to evaluate the nutrition status of calcium and iron in 116 elementary school students with different obesity index. Subjects were assigned to under weight, normal weight or over weight group according to the their obesity index. Their nutritional status, serum calcium and iron levels were evaluated based on 24-recall dietary recalls, anthropometric measurements and blood analysis. The mean height, weight, obesity index and blood pressure of total subjects were 150.4 cm, 45.5 kg, 5.8% and 118.2/76.8 mmHg. The mean % of body fat, SBP and WHR were higher while LBM and TBW were lower in over weight subject than those of other group. The iron intake of overweight was lower than that of underweight and normal subjects(p<0.05) and average calcium intakes were only 50% and 60% respectively of the RDA for Korean. Serum calcium and iron levels of a three groups were within the normal range. There were no significant differences in serum calcium and iron concentrations among three groups, however those of underweight group were a slightly lower than those of other two groups. There were significantly negative correlations between iron of intake and weight, obesity index, systolic pressure and body fat percent. Systolic blood pressure was negatively correlated to the intakes of energy, carbohydrate and protein. Energy intake was also negatively correlated to serum iron. To summarize the results, calcium and iron intakes should be supplied to elementary school students, especially those who were overweight. These indicated that overweight group had improper mineral nutrition status. Therefore, nutrition education and profound studies from many different focus for overweight groups are highly required.