This is when the kneecap (patella) comes right out of the groove in the thighbone (femoral groove) in which it normally rides.

It is most common in young people (16-20 years) and most frequent in the female sex.

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Patellar Instability โ€“ a Continuum

Patellar Instability can dramatically reveal itself with a sudden episode of dislocation of the patella (kneecap).

Although most people are familiar with the distress experienced by someone who has had a dislocated patella, fewer realise that...

The unstable patella - congenital or acquired?

Instability in the patella means that it jumps to the edge or out of the normal track in the femur in which it lies.

Patellar instability and dislocation

Discussing how the anatomy can affect the tendency to dislocate the patella.

What are the common kneecap problems?

A quick overview of kneecap problems to help you with your research.

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