Pediatric Radiology

, Volume 16, Issue 2, pp 171–172 | Cite as

Hip joint fluid in the presence of the vacuum phenomenon

  • W. D. Middleton
  • W. H. McAlister
Short Reports


A 3-year old boy with an acute onset of hip pain and limitation of motion had 4 mm of crescent shaped intra-articular gas produced by manual traction radiography. Hip aspiration produced more than 2 ml of fluid from the hip. Manual traction radiography producing the vacuum phenomenon with release of crescent shaped intra-articular gas did not exclude joint fluid in this patient.

Key words

Hip fluid traction radiography toxic synovitis 


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Copyright information

© Springer-Verlag 1986

Authors and Affiliations

  • W. D. Middleton
    • 1
  • W. H. McAlister
    • 1
  1. 1.Mallinckrodt Institute of RadiologyWashington University School of MedicineSt. LouisUSA

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