'Patellofemoral' means that area of the knee where the kneecap (patella) is in contact with the thighbone (femur).

The word is used as an adjective to describe the nature of a body part or a procedure - eg patellofemoral resurfacing.

Synonyms: 
PF
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Video demonstrating the J sign

Easy-to-read interpretation of a 2012 medical article on primary traumatic patellar dislocation.

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Editors: Robin V. West, Alexis C. Colvin

The Patellofemoral Joint in the Athlete