Ultrasonic measurement of humeral distal epiphysial anteverted angulation / 中华超声影像学杂志

ABSTRACT

Objective To explore the changing regularity of humeral distal epiphysial anteverted angulation with ultrasonic measurement. Methods Using an ultrasonic diagnostic apparatus with a high frequency bougie to detect the dextral elbow joint of 203 normal individuals whose age range is from 5 d to 23 years old. The subjects were divided into 5 groups by age (5 d-4 years old, 5-8 years old, 9-12 years old, 13-16 years old, ≥17 years old),and by sex into two large parts.Anteverted angulation of capitellum and lateral semitrochlear ossification center were measured with statistic analysis and correlation calculation.Results Anteverted angulation of capitellum was 48.89?? 8.96?, lateral semitrochlea 33.70?? 7.18?. Anteverted angulation of capitellum enlarges with age growth, and it reaches the climax ( 55.00?? 5.88?) at the age 13-16 years old. There was a significant difference among groups. After 17 years old, anteverted angulation slightly reduces to 52.38?? 8.27?, compared with the climax ( 55.00?? 5.88?), there was no statistical difference. Changing regularity of anteverted angulation was similar to that of capitellum. Just between the 5 d-4 years old group and 5-8 years old group, the difference was significant in angulation enlargement. There was no statistical difference among the groups above the 5-8 years old group, and no significant difference between male and female in humeral distal epiphysial anteverted angulation. Conclusions Ultrasonic examination can clearly display the images of humeral distal epiphysis. Observation and measurement is available for the epiphysial anteverted angulation by acoustic images, and the changing regularity of anteverted angulation can be illustrated.