ACL injuries consist of a tear or sprain in the anterior cruciate ligament, one of the ligaments that connects the thigh bone to the shinbone and strengthens the knee. Sports that involve quick stops, sudden pivots, and jumping (soccer, basketball, football, skiing) usually see many ACL injuries among participants.

Most people hear or feel a loud “pop” sensation in the knee when an ACL injury first happens. The knee will swell, lose stability and cause severe pain when bearing weight.

Depending on the intensity of the injury, ACL treatment can include regaining strength and stability through rehabilitation exercises, or undergoing surgery to replace the torn ligament. Proper training procedures when participating in active sports will help reduce the risk of suffering an ACL injury.