You may hear or feel a pop in your knee when you tear your ACL. Other signs and symptoms of an ACL tear include:

  • Rapid swelling.
  • Severe knee pain.
  • Loss of full range of motion.
  • Discomfort while walking.
  • Instability or feeling like your knee is giving way.

It’s crucial to seek treatment right away if you experience an injury that causes signs or symptoms of a torn ACL. Returning to sports without proper treatment may result in further damage to your knee, such as a meniscus tear.