Voluntary habitual dislocation of the hip: sonographic diagnosis.
A case of voluntary habitual dislocation of the hip with sonographic diagnosis of the "vacuum phenomenon" is described. This was seen as a characteristic hyperechoic interface between the acetabular fossa and the dislocating femoral head.
Department of Diagnostic Radiology and Organ Imaging, Prince of Wales Hospital, Shatin, Hong Kong.
Y L
YL
Chan
J C
JC
Cheng
A P
AP
Tang
D005260:Female; D006617:Hip Dislocation / Q000000981:diagnostic imaging*; D006801:Humans; D007223:Infant; D012008:Recurrence; D014463:Ultrasonography