You will find big blood vessels passing through the place at the rear of the knee (often called the popliteal Room). The large muscles of the thigh shift the knee. Clicking – painless clicking is not of any true importance. Nonetheless, painful clicking and/or clicking affiliated with thoughts of catching, https://www.theorthopaedicandpainpractice.com/what-is-an-anterior-cruciate-ligament-acl-injury/