ACL injury:

Anterior cruciate ligament (ACL) injuries may occur from coming to a quick stop with a directional change while running, pivoting, landing, or overextending the joint in either direction.
- Reviewed last on: 7/17/2008
- Andrew L. Chen, MD, MS, Orthopedist, The Alpine Clinic, Littleton, NH. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.