PCL is an abbreviation of 'posterior cruciate ligament'.
Function of the PCL
The PCL prevents excessive backwards movement of the tibia in relation to the femur. It has an opposite action to its fellow, the ACL (anterior cruciate ligament).
Posterior Cruciate Ligament: Current Concepts Review. Pache S, Aman ZS, Kennedy M, Nakama GY, Moatshe G, Ziegler C and LaPrade RF. Arch Bone Jt Surg. 2018 Jan; 6(1): 8–18.