Newswise — A torn anterior cruciate ligament (ACL), a type of knee injury, doesn't have to permanently sideline active adults age 50 and older, according to the March issue of Mayo Clinic Health Letter.

The ACL is a key ligament that stabilizes and supports the knee joint. It connects the thigh bone (femur) to the shinbone (tibia) and controls movement of the lower leg. The ACL is an important knee stabilizer when twisting, pivoting or jumping.

On the tennis court or during other high-intensity activities, a loud "pop" emitted from the knee and severe pain are the first signs of a torn ACL. A partial or complete tear can result from a hard twist on the joint, a sudden stop while running, a jump landing, or a direct blow to the knee.

Until recently, ACL tears occurring after age 50, and even after age 40, were typically managed with nonsurgical care that included modified activity levels and physical therapy. The treatment led to recovery but not the same level of stability as surgical repair.

More people 50 and older are leading active lives, which makes them good candidates for surgical reconstruction of the ACL. The ligament is reconstructed with a piece of tendon from the leg or with a tendon from a donor cadaver. With successful surgery, active adults can return to the same activities they participated in prior to the injury.

Mayo Clinic Health Letter is an eight-page monthly newsletter of reliable, accurate and practical information on today's health and medical news. To subscribe, please call 800-333-9037 (toll-free), extension 9771, or visit www.HealthLetter.MayoClinic.com.

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