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KMID : 0374019940170040383
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Ewha Medical Journal
1994 Volume.17 No. 4 p.383 ~ p.390
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The Normal Humero-Capitellar Angle in Children ; Baumann Angle and Lateral Humero-Capitellar Angle
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Abstract
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In children, the cause of angular deformity after the treatment of distal humeral fracture is mainly not due to the growth problem but the alignment of initial reduction state. The alignment of reduction status can be measured by numerous methods
for
anatomical reduction. The Baumann angle and lateral humero-capitellar angle are the most useful radiologic measuring methods for the evaluation of the anatomical configuration of distal humerus. But the determination of the straight line along
the
capitellar growth plate has some difficulties because the curved, rounded capitellar shape may overlap the distal humeral metaphysis. So, 4 types classification suggested by Williamson et al. is used for determination of the line with easy.
The Baumann angle is a valuable measurement method of distal humerus alignment, but as we know, there is no normal range data in Korean children. We measured the normal Baumann angle and lateral humero-capitellar angle using 112 cases normal
elbow
X-ray
films and analysed its significanses.
@ES The results are as follows:
@EN 1) The mean Baumann angle is 69.2° with 62° standard deviation.
2) the mean lateral humero-capitellar angle is 45.3°with 8.3° standard deviation.
3) The baumann angle and lateral humero-capitellar angle have no differneces between ages, sexes, sidedness and types.
4) The 4 types classification by the shape of the capitellar growth plate is a relatively objective and useful method for the measurement of Baumannn angle.
5) The Baumann angle has negative value coefficiency with lateral humero-capitellar angle.
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KEYWORD
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