Gray cortex sign (stress fracture)

The gray 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:
  • Grey cortex sign
  • Grey cortex sign

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