Grey cortex sign (stress fracture)

The grey cortex sign was described as an early sign of stress (fatigue) fractures on conventional radiographs and refers to subtle ill definition of the cortex.

However, conventional radiography is insensitive for the detection of early-stage fatigue fractures. CT is much more sensitive for detection of bone loss that precedes true fracture 1.

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Article Information

rID: 52654
Section: Signs
Synonyms or Alternate Spellings:
  • gray cortex sign
  • grey cortex sign

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