The medial patello-femoral ligament is a small but important ligament stretching from the inner aspect of the patella (knee cap) to the femur bone.

It acts as a passive restraint, helping to keep the patella properly aligned.

Synonyms: 
MPFL
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Patellar instability and dislocation

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

The patella - important anatomical relationships

The kneecap or patella is part of a chain of structures that help to straighten the knee.

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