The arcuate ligament is a thickening of the posterolateral capsule at the back of the knee, that contributes to stability of the joint in this region.

arcuate ligament at the back of the knee
The ligament is really a thickening of the capsule, and it arcs over the tendon of the popliteus muscle and attaches to the fibula.

Multiligament instability of the knee

An overview of the types of multiligament instability seen in the knee.



Current Concepts of Posterolateral Corner Injuries of the Knee. Shon O-J, Park J-W and Kim B-J. Knee Surg Relat Res. 2017 Dec; 29(4): 256–268.

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