Torn ACL (cont.)
Benjamin Wedro, MD, FACEP, FAAEM
Dr. Ben Wedro practices emergency medicine at Gundersen Clinic, a regional trauma center in La Crosse, Wisconsin. His background includes undergraduate and medical studies at the University of Alberta, a Family Practice internship at Queen's University in Kingston, Ontario and residency training in Emergency Medicine at the University of Oklahoma Health Sciences Center.
William C. Shiel Jr., MD, FACP, FACR
Dr. Shiel received a Bachelor of Science degree with honors from the University of Notre Dame. There he was involved in research in radiation biology and received the Huisking Scholarship. After graduating from St. Louis University School of Medicine, he completed his Internal Medicine residency and Rheumatology fellowship at the University of California, Irvine. He is board-certified in Internal Medicine and Rheumatology.
In this Article
- Torn anterior cruciate ligament (ACL) facts
- What is the function of the knee joint?
- What is a torn anterior cruciate ligament (ACL)?
- What causes a torn ACL?
- What are symptoms and signs of a torn ACL?
- How is a torn ACL diagnosed?
- What is the treatment for a torn ACL?
- How long does it take to recover from a torn ACL?
- What is the prognosis of a torn ACL?
- Can ACL tears be prevented?
- Find a local Doctor in your town
How long does it take to recover from a torn ACL?
Rehabilitation and return to normal function after surgical repair of an ACL tear can take six to nine months. There needs to be a balance between trying to do too much work in physical therapy returning strength and range of motion and doing too little. Being too aggressive can damage the surgical repair and cause the ligament to fail again. Too little work lengthens the time to return to normal activities.
What is the prognosis of a torn ACL?
More than 80% of people who have surgery to repair their ACL have good return of function and lifestyle. Less than 10% of patients develop permanent knee instability.
For patients who do not have surgery to repair a torn ACL, 50% have a fair outcome with no knee instability. This is an option for sedentary people or for those whose activities require no pivoting or cutting.
Can ACL tears be prevented?
ACL injuries usually occur in active people engaged in activities that are enjoyable. The risk of injury can potentially be decreased by maintaining muscle strength and flexibility. Warming up, stretching and cooling down are ways of protecting joints and muscles. Strengthening exercises and agility drills can help prevent injury. Plyometric exercises to help build power, strength, speed, and balance can teach the body how to jump and land properly to minimize the risk of injury. It is important to avoid landing on a fully extended and locked leg.
Buchholz, R.W., et al. Rockwood and Green's Fractures in Adults. 6th edition. Philadelphia: Lippincott, Williams and Wilkins, 2006.
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