3.0T MRI features of normal acetabular labrum in children / 中国医学影像技术

ABSTRACT

Objective To observe the 3.0T MRI features of normal acetabular labrum and variation in children. Methods MR appearances of normal acetabular labra in 53 children aged from 4 days to 14 years were reviewed retrospectively. The children were divided into four groups according to the agegroup A0-3 years; group B4-7 years; group C8-11 years; group D12-14 years. All of them were examined with 3.0T MR including axial and coronal sequences. Results ①MR appearances of normal acetabular labra could be classified into 3 typestriangle, flat-shape and absent in shape. Triangle was the most common (78.29%). ②There was remarkable difference in the distribution of labra morphology among different groups and different portions of hip. Triangle was most commonly observed in group D and on the anterior portion. ③High signal intensity of normal acetabular labra in MRI was most frequently seen on the anterior site of hip. Conclusion The shape and signal intensity of normal acetabular labrum in children varies in different age groups and different portions.