Facet joint vacuum phenomenon

Facet joint vacuum phenomenon or degenerative intrafacetal gas is a feature that can be seen on spinal imaging in facet joint arthropathy as part of degenerative spondylosis

Radiographic features

Signal characteristics are those of air and are

  • T1: low signal
  • T2: low signal

Differential diagnosis

In traumatic situation, consider

See also


Article information

rID: 65618
System: Spine
Synonyms or Alternate Spellings:
  • Facet joint vacuum phenomena
  • Degenerative intrafacetal air
  • Degenerative intrafacetal gas

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Cases and figures

  • Case 1: at L4/5 level
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