한국 정상인의 정상흉추 후만곡에 관한 연구

Abstract

Jt is well known that the normal spine is in the curvature with the dorsal kyphosis and lumbar lordosis, but in the ,litera tur e there is no well done study concerning what is normal range of normal dorsal kyphosis. Therefore it is unreaso nable to call a curve is abnormal, or relatively increased or decreased than the normal in terms of dorsal curvature without knowing its normal angle. The purpose of this paper is to present what angle the normal dorsal kyphosis has in Korean. We divided the sample 3 groups, A,Band C by the age , which is in the range of 10 to 14, 15 to19 and 20 to 24 years of 'age respectively. Each group contains 30 normal male and female, the whole, summing up to one hundred and eighty persons. After taking the lateral roentgenographic view, the dorsal curve was measured hy Cobbs method. In order to have good lateral view of the dorsal spine, the roentgenogram was taken with the arm 90 foreward-flexed and rested on the paralell bar. The result shows that the median and two standard deviationof A, Band C group are 33 , 28 , and 17 to 45 , 19 to 46° in A group, 32 ,30 and 40' , 16 17 to 45 ,16 to 42 in B group, 27 , 25 and 14 to to 42 in C group. The two standard deviation of the measured dorsal kyphotic angle of the whole group IS 16 to 46 that is suspected to be normal do앤al kyphotic angle in Korean.