The posterolateral corner of the knee (PLC) is an inherently complex region both anatomically and functionally, and in recent times has been 're-discovered' for the role it plays in knee function and stability. In fact, the PLC of the knee has 28 seperate components, all of which play a vital role in both static and dynamic stability to prevent excessive hyperextension, tibial external rotation and varus angulation. This week, Grant Freckleton - now APA-titled Musculoskeletal Physiotherapist - shares his knowledge about injuries to the posterolateral corner of the knee.