Madison BBB et al., 

Abstract:

The study assessed the normal values and the relationship between Baumann’s angle and the trochleocapitellar
index. Normal anteroposterior elbow radiographs of children were examined. The mean values and reference intervals of baumann’s angle and the trochleocapitellar index were determined as well as their variability with sex, age, and race. The relationship between Baumann’s angle and the trochleocapitellar index was examined using Pearson’s product moment correlation. A mean value of Baumann’s angle of 72.4o was determined with a reference interval of 64o to 80o. The mean trochleocapitellar index was found to be 0.48 with a reference interval of 0.25 to 0.85. Baumann’s angle and the trochleocapitellar index did not vary with age or sex. The trochleocapitellar index was found to positively correlate with Baumann’s angle. The correlation coefficient and the coefficient of determination values for the linear relationship between the two measurements were 0.589 and 0.347 respectively. We concluded that baumann’s angle and the trochleocapitellar index do not vary with age, sex, or race. There is a positive correlation between Baumann’s angle and the trochleocapitellar index. Further studies on the role of the trochleocapitellar index in the assessment of the final carrying angle of pediatric elbows need to be conducted.

Keywords: Humeral supracondylar fracture; Trochleocapitellar angle, Baumann’s angle, carrying angle

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