The<unk>  <unk>  is a ligament in each knee of humans and various other animals. It works as a counterpart to the anterior<unk>  ligament (ACL). It connects the<unk>  intercondylar area of the tibia to the medial condyle of the femur. This configuration allows the<unk>  to resist forces pushing the tibia<unk> ly relative to the femur. The<unk>  and ACL are intracapsular ligaments because they lie deep within the knee joint. They are both isolated from the fluid-filled synovial cavity, with the synovial membrane wrapped around them. The<unk>  gets its name by attaching to the<unk>  portion of the tibia. The<unk> , ACL, MCL, and LCL are the four main ligaments of the knee in primates.
Posterior cruciate ligament
Osborne's ligament
Median arcuate ligament
Discoid meniscus
Achilles tendon
Ligamenta flava
Pivot joint
Epiphyseal plate