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Voluntary habitual dislocation of the hip: sonographic diagnosis
Y L Chan1, J C Cheng, A P Tang
1Department of Diagnostic Radiology and Organ Imaging, Prince of Wales Hospital, Shatin, Hong Kong.
Pediatric Radiology
|January 1, 1993
Abstract:
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.