An ACL sprain can have several different grades, and there is also a complete ACL tear. If you’ve had ACL surgery, follow the protocol given by your doctor or physical therapist.
These are my favorite ACL stretches and exercises for an ACL Sprain before surgery or if you decide not to have surgery.
To start off, you want to get the knee motion back. Heel slides, quad sets, knee props, and hamstring stretches can help you gain back motion that you might have lost with your injury. There are several other muscles around that knee that are also important to stretch, and you can find many other stretches on my channel.
Once you have mobilized and stretched the knee, you can work on strengthening the knee. A straight leg raise (SLR), terminal knee extension without and with a resistive band, and a balance progression series are great ways to get the strength and stability back in your knee.