Clinical:

• History:

  • trauma very common
  • also repetitive LS motion – lumbar rotation or axial loading
  • no specific correlation with exacerbating activities

• Exam:

  • may see false-positive supine SLR due to movement of the SIJ beyond 60 degrees
  • neurological exam should be normal
  • antalgic gait
  • tenderness to palpation at SIJ, PSIS, or sacral sulcus
  • may commonly see leg length discrepancy
  • positive Patrick’s maneuver

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