Anterior cruciate ligament (ACL) injury
The ACL is a band of soft tissue that runs in front of your knee joint. It provides a connection to your shinbone (tibia) and thighbone (fibula) and provides smooth movement to your knee.
ACL is prone to injuries, especially when you slow down, jump, or change direction while running or playing sports. You can also tear this ligament if you get hit in a contact sport or land a jump wrong.
Just like meniscus injury, you might feel a “popping” sound when the injury happens followed by swelling of your knee. You might feel pain and have trouble fully moving your knee when you walk.
Elevation, rest, compression, and physiotherapy can help an ACL injury heal. You may need surgery to fix a torn ACL ligament.