Modality: X-ray (Lateral)

- “ In 30 degree flexed knee: Insall-Salvati index: normal mean is 1; ratio >1.2 is diagnostic of patella alta and <0.8 is diagnostic of patella baja...”

Used in the following article:

  • Modified Insall-Salvati ratio - “ The modified Insall-Salvati ratio or index is another technique to assess patellar height. Usage It was proposed to avoid mismeasurement due to ...”
  • Caton-Deschamps index (knee) - “ The Caton-Deschamps index is used to measure patellar height and identify patella alta and patella baja. The Caton-Deschamps index relies upon the...”

View full size version of Insall-Salvati and modified Insall-Salvati indices

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