Ultrasonic imaging characteristics of growth and development of distal humerus epiphysis in children
10.3760/cma.j.cn131148-20240612-00330
- VernacularTitle:儿童肱骨远端骨骺生长发育的超声影像学特点
- Author:
Fang LIU
1
;
Sicheng ZHANG
;
Zhongtuo HUA
;
Hailong MA
Author Information
1. 安徽省儿童医院骨科 安徽医科大学儿童医学中心，合肥 230051
- Keywords:
Ultrasonography;
Children;
Humerus;
Epiphysis;
Shaft condylar angle
- From:
Chinese Journal of Ultrasonography
2024;33(11):941-946
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the standard imaging features of distal humerus epiphysis in children of different ages under ultrasound imaging, and to lay a foundation for the diagnosis and treatment of distal humerus epiphysis injury by ultrasound.Methods:The ultrasound imaging data of 3 283 children who voluntarily underwent distal humerus ultrasound at the Department of Orthopedics and Emergency of Anhui Children′s Hospital from January 2022 to December 2023 were retrospectively collected, and the relevant epidemiological data of all cases were described. The distal humerus was scanned by ultrasound from 8 dimensions to investigate the characteristics of ultrasonic images at different ages and to measure the changes of distal humerus epiphysis angle.Results:The ratio of sex (male, female) and side (left, right) of all 3 283 children included were about 1∶1, the ratio of Han nationality to other ethnic groups was about 24∶1. The ultrasonographic findings showed that the ossification center of the distal humerus increased with age. The ossification center of the small head of the humerus first appeared, followed by the ossification center of the internal epicondyle of the humerus, then the ossification center of the trochlear of the humerus appeared, and finally the secondary ossification center of the external epicondyle appeared. With age, the distal lateral epicondyle, capitulum and trochlea of the humerus became completely ossified and fused with the metaphyseal, but the fusion time of the internal epicondyle of the humerus was late. The distal humerus epiphysis angle in male was (48.49±7.24)° and (50.14±7.64)° in female. The measured value in female was slightly higher than in male, but there was no significant difference between the sexes ( P>0.05). The anterior tilt angle of humerus small head increased with age( P<0.001). Conclusions:Ultrasound imaging can observe the anatomical characteristics of the distal humerus bone in children, and can observe the changes of the size and shape of the secondary ossification center of the small head of humerus and the changes of the distal humerus epiphysis angle at different ages, laying a foundation for the diagnosis and treatment of distal humerus epiphysis injury.
