A torn ACL (anterior cruciate ligament) injury happens when the ACL in your knee gets damaged or torn (‘ACL tear’). The ACL is a strong band of tissue that connects your thigh bone (femur) to your shinbone (tibia) and helps keep your knee stable when you move. When this ligament gets torn (ACL injury), it can cause a lot of pain and make it hard to move your knee.
Some common causes of a torn ACL include playing sports (ex: football tackle) or doing activities that involve sudden stops, quick changes in direction, or jumping and landing. Sports like basketball, soccer, and football have a higher risk of ACL injuries because they involve these types of movements. Accidents, like falling or getting hit in the knee, can also cause a torn ACL.
There are a few symptoms or warning signs that might suggest someone has torn their ACL. These can include:
A “pop” sound or feeling: When the ACL tears, some people might hear or feel a popping sensation in their knee.
Pain: An ACL injury can cause severe pain in the knee, making it hard to walk or put weight on the injured leg.
Swelling: The knee injury might swell up quickly after the ACL injury. This swelling can be a sign that something is wrong inside the knee joint.
Instability: If the knee joint feels wobbly or like it’s giving out when you try to stand or walk, it might be a sign of a torn ACL.
If you think you or someone else has a torn ACL, it’s important to get it checked out right away.