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肱骨髁上折一般诊断不难.但4岁以下幼儿的肱骨髁上青技骨折,却常因为幼儿不能提供确切的病史、局部症状不严重、X线的骨折征象又不大明显,使得诊断发生困难.我们在临床观察及测量4岁以下幼儿时关节X线片中,发现侧位片上肱骨干纵轴线与肱骨外上髁前缘皮质切线有一个交角,我们称之为干髁角(以构成该角的两线段命名).经12名2～4岁正常幼儿的测量,其角度有15°～20°之间.另外我们测量同龄组肱骨髁上青枝骨折患儿30例,结果干髁角消失27例,占90%;小于10°3例,占10%.这对诊断4岁以下幼儿是否患有骨折很有意义.介绍如下.
It is not difficult to diagnose the fracture of the humerus supracondylar, but the fractures of the supracondylar supracondylar fractures in children younger than 4 years old often do not provide the exact history because of the young children. The local symptoms are not serious and the signs of X-ray fracture are not obvious, Difficulty in our clinical observation and measurement of children under the age of 4 joint X-ray film and found that the lateral humeral axis of the lateral humeral epicondyle and the tangent of the anterior cortical tangent angle, we call it dry angle (to form The angle of the two-line naming.) 12 normal children aged 2 to 4 years of measurement, the angle between 15 ° ~ 20 ° In addition, we measured the same age group of supracondylar humeral fractures in children with 30 cases, the results of dry condyle Angle disappeared in 27 cases, accounting for 90%; less than 10 ° in 3 cases, accounting for 10% .This diagnosis of children under 4 years old is very meaningful fracture.