The collateral ligaments are the 'guy ropes' on the sides of the knee.

medial and lateral collateral ligaments
The one on the inner aspect is the 'medial collateral ligament' and the one on the outer aspect is the 'lateral collateral ligament'.


What do the collateral ligaments do?

The collateral ligaments restrain the joint from forces that would open it up on the side, ie varus or valgus forces.


The cruciate ligaments

Illustrated overview of the position and function of the cruciate ligaments.

Knee ligaments

A quick overview of the ligaments at the side of the knee.



Fibular collateral ligament


Medial collateral ligament injuries of the knee: current treatment concepts. Chen L, Kim PD, Ahmad CS and N. Levine WN. Curr Rev Musculoskelet Med. 2008 Jun; 1(2): 108–113.

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