Complex sentence: The joint is stabilized by paired collateral ligaments which act to prevent abduction/adduction at the joint, as well as the cranial cruciate ligament and the caudal cruciate ligament, which restrict cranial and caudal translation (respectively) of the tibia on the femur.
Split into simpler sentences: The joint is stabilized by paired collateral ligaments which act to prevent abduction/adduction at the joint, as well as paired cruciate ligaments. The cranial cruciate ligament and the caudal cruciate ligament restrict cranial and caudal translation (respectively) of the tibia on the femur.