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Chap. 15 - Knee
Insall-Salvati and modified Insall-Salvati indices
Discussion:
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.
modified Insall-Salvati index: normal mean of 1.25; ratio >2 is diagnostic of patella alta
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Insall-Salvati ratio
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