Fan Yan-Hua, Tang Xiao-Kang, Tong Pei-jian
Zhejiang Hopital of Traditional Chinese Medicine, Hangzhou, Zhejiang, China.
Zhongguo Gu Shang. 2013 Feb;26(2):95-7.
To analyze the relationship between the degree of displacement and Baumann angle in pediatric supracondylar humeral fractures by using Excel, and to guide treatment for humeral fractures of children.
From July 2010 to July 2011,56 children with humeral supracondylar fractures were collected (34 boys and 22 girls, 15 patients with radial deviation and 41 patients with ulnar deviation,ranging in age from 3 to 14 years). The data of the patients about fracture displacement and the Baumann angle measured by MB-Ruler were input in Excel and then were analyzed to obtain data fitting curve.
There were close results between two methods, and the tangent of the radial deviation was more than tangent of ulnar deviation, which indicated that the influence of ulnar deviation was stronger than that of the radial deviation in pediatric supracondylar humeral fractures,so the correction should be paid attention to in clinic. When the radial deviation coefficient was less than -0.18 and ulnar deviation coefficient was more than 0.50,the Baumann angle would change to the reverse trend, so the angle range of Baumann in clinic should be between 65.70 and 96.77 degree. When the ulnar deviation factor was more than 0.15(including 0.15) and Baumann angle more than 82 degrees(including 82 degree), cubitus varus deformity occurred inevitably,so the practices and surgical reduction should be focused on in clinic.
According to data curves analysis results,the influence of ulnar deviation is stronger than that of the radial deviation in pediatric supracondylar humeral fractures. When the ulnar deviation factor is more than 0.15 (including 0.15), correction should be focused on in order to prevent cubitus varus deformity.
运用Excel分析小儿肱骨髁上骨折的移位程度与鲍曼角之间的关系，以指导儿童肱骨骨折的治疗。
收集2010年7月至2011年7月间56例肱骨髁上骨折患儿（男34例，女22例，桡偏15例，尺偏41例，年龄3至14岁）。将患儿骨折移位及采用MB尺测量的鲍曼角数据录入Excel，然后进行分析以获得数据拟合曲线。
两种方法结果相近，桡偏切线大于尺偏切线，表明小儿肱骨髁上骨折中尺偏的影响强于桡偏，临床应予以重视。当桡偏系数小于-0.18且尺偏系数大于0.50时，鲍曼角会出现反向变化趋势，故临床鲍曼角范围应在65.70至96.77度之间。当尺偏因素大于0.15（含0.15）且鲍曼角大于82度（含82度）时，不可避免会发生肘内翻畸形，临床应注重手法及手术复位。
根据数据曲线分析结果，小儿肱骨髁上骨折中尺偏的影响强于桡偏。当尺偏因素大于0.15（含0.15）时，应注重矫正以预防肘内翻畸形。
