Radiographic evaluation of Baumann angle in Chinese children and its clinical relevance.
Normal Baumann angles in 98 children aged 2 to 13 years and abnormal Baumann angles in 71 children with supracondylar humeral fractures were evaluated. In healthy children, Baumann angles ranged from 64 degrees to 80 degrees (72.4 degrees +/- 4.6 degrees) in boys and from 65 degrees to 81 degrees (72.9 degrees +/- 5.9 degrees) in girls. A significant negative relation (P < 0.01) between Baumann angle and carrying angle was noted, but there were no significant differences in Baumann angles between boys and girls (P > 0.05) and no significant correlation of Baumann angle with increasing age (P > 0.05). In patients with fractures, the Baumann angle measured after immediate reduction correlated well with the carrying angle measured after union or at final follow-up (P < 0.01). This angle measured after reduction may be used to predict the final carrying angle so that cubitus varus deformity can be effectively prevented.
Department of Orthopaedic Surgery, Changzheng Hospital, Shanghai, China.
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D000293:Adolescent; D017677:Age Distribution; D000704:Analysis of Variance; D016022:Case-Control Studies; D002648:Child; D002675:Child, Preschool; D002681:China / Q000453:epidemiology; D004551:Elbow Joint / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D006810:Humeral Fractures / Q000000981:diagnostic imaging* / Q000453:epidemiology; D015994:Incidence; D016014:Linear Models; D008297:Male; D011859:Radiography; D012189:Retrospective Studies; D012307:Risk Factors; D012680:Sensitivity and Specificity; D017678:Sex Distribution; D000092464:Elbow Injuries