What are the symptoms of a torn acl?

Torn acl: With acute injury, u hear a loud pop then develop intense pain in the knee, then the knee begins to swell within few hours.

GIving way/unstable: When you tear an acl, a person often feels as though the knee went the wrong way. It is usually a non-contact injury. The knee will swell. Later after recovery from the pain and swelling of this first injury, the knee often feels great. The symptoms then are of recurring instability like you don't trust the knee or it gives out. So the symptoms actually change with time.

Acl tears: Pain with swelling along with feelings of instability r the most common symptoms associated with torn Acl. Usually one will also have experienced some type of trauma as I these don't tear typically with aging

Knee instabillity.: You're knee may feel that it is unstable, loose or shifting with twisting movements.