Value of pubo-femoral distance in the diagnosis of infants with developmental dysplasia of the hip
10.3760/cma.j.cn131148-20230719-00020
- VernacularTitle:头耻距对婴儿发育性髋关节发育不良的诊断价值
- Author:
Shumin ZHANG
1
;
Tao CHEN
;
Jingmiao YU
;
Jingnan HE
;
Wen GUO
;
Dandan WANG
;
Xiaoting QIN
;
Yibing ZHAO
Author Information
1. 首都医科大学附属北京积水潭医院超声科，北京 100035
- Keywords:
Ultrasonography;
Infants;
Developmental dysplasia of the hip;
Pubo-femoral distance;
Stability of hip
- From:
Chinese Journal of Ultrasonography
2023;32(12):1090-1093
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To discuss the value of pubo-femoral distance(PFD) in the diagnosis of infants with developmental dysplasia of the hip(DDH).Methods:Nine hundred and thirty-one infants with DDH and normal infants diagnosed by clinical examination and ultrasonography were involved from February 2022 to June 2023 in Beijing Jishuitan Hospital. The ultrasonographic examination included Graf method and pubo-femoral distance measurement. Statistical analysis was made on the measurements of PFD of different types of hips.Results:Among all the hips, 1 359 hips were Graf type Ⅰ, 274 hips were Graf type Ⅱa, 166 hips were Graf type Ⅱb, 31 hips were Graf type Ⅱc, 7 hips were Graf type D, 13 hips were Graf type Ⅲ, and 12 hips were Graf type Ⅳ. The PFD of these hips were (0.34±0.07)cm, (0.35±0.08)cm, (0.35±0.08)cm, (0.51±0.11)cm, (0.67±0.09)cm, (0.95±0.26)cm, (1.27±0.30)cm, respectively. There was no significant difference in PFD between hips of Graf Ⅰ, Graf Ⅱa and Graf Ⅱb ( P>0.05), but there was significant difference in PFD between hips of the other Graf types ( P<0.05). The area under curve(AUC) of the PFD for the diagnosis of stability of the hips in infants was 0.959 with the cut-off value of 0.435 cm, the sensitivity and specificity were 88.9% and 90.4%, respectively. Conclusions:The PFD has great value in the evaluation of the stability of hip joint, and the cut-off value is 0.435 cm.
