Ranawat's line

Ranawat's line is the perpendicular distance between the centre of the sclerotic ring of C2 and a line drawn along the axis of the C1 vertebra.

Normal value is 17 mm in males and 15 mm in females. It is decreased in basilar invagination.

History and etymology

Chitranjan S Ranawat is an American orthopaedic surgeon at the Hospital for Special Surgery in New York City. He described his eponymous line in a paper published in 1979 2.

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Article information

rID: 25673
Section: Gamuts
Tags: refs, stub
Synonyms or Alternate Spellings:
  • Ranawats measurement

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