The posterolateral corner of the knee is the region on the outer aspect, towards the back of the knee.
The importance of the posterolateral corner
Important PLC structures include:
- lateral meniscus
- popliteus tendon
- popliteofibular ligament
- lateral collateral ligament
- posterior cruciate ligament
- arcuate ligament
Injuries are commonly impact in causation, especially if the knee is hyper-extended (bent backwards). Usually there is an associated injury to the anterior or posterior cruciate ligament (ACL or PCL), but repair of these ligament injuries may fail unless the surgeon addresses damage to other posterolateral corner structures.
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.
Posterolateral Corner of the Knee: Current Concepts. Chahla J, Moatshe G, Dean CS and LaPrade RF. Arch Bone Jt Surg. 2016 Apr; 4(2): 97–103.