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.
Dai
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Department of Orthopaedic Surgery, Changzheng Hospital, Shanghai, China.
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