You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Origin of PCL- Posterior cruciate ligament and explain in detail?
Posterior cruciate ligament (PCL) PC L begins from posterior pa of intercondylar area of tibia and runs upwards, forwards and medially to attach the anterior pa of the lateral surface of medial condyle of femur. PCL is extrasynol but intracapsular, i.e. lies between synovium and capsule of the knee joint. It provides antero-posterior stability and prevents posterior gliding of tibia on femur. It is taut in flexion. Blood supply of cruciate (anterior & posterior) ligaments is from :- Middle genicular aery (major supply). Inferior genicular (medial & lateral) aery (less impoant). Nerve supply of cruciate ligaments (ACL & PCL) is from posterior aicular branch of tibial nerve.