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What Do You Know About Knee Injury?

Your knees are complex joints and that makes them vulnerable to injury. Learning how to prevent knee injuries and treating them if they occur can help you stay active at work and play. Test your knowledge of knees by taking this quiz, based on information from the American Academy of Orthopaedic Surgeons.

1. Ligaments connect muscles to bones.

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The correct answer is

Ligaments connect bones to bones. Tendons connect muscles to bones. The 4 main ligaments in the knee connect the thighbone (femur) to the shin bone (tibia).

A. TrueB. False

2. The knee has 7 ligaments.

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The knee has 4 ligaments. They are:

Anterior cruciate ligament (ACL)
Posterior cruciate ligament (PCL)
Medial collateral ligament (MCL)
Lateral collateral ligament (LCL)

A. TrueB. False

3. You may hear a popping sound when a knee ligament is injured.

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Your leg may also buckle when you try to stand on it. And you may have swelling and pain in the knee.

A. TrueB. False

4. The anterior cruciate ligament (ACL) is most often injured by lifting something heavy.

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The ACL is often stretched or torn during a sudden twisting motion. This can happen when the feet stay planted one way, but the knees turn the other way. Skiing, basketball, and football are sports that have a higher risk for ACL injuries.

A. TrueB. False

5. Which test is not used to diagnose a knee ligament injury?

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An ECG (electrocardiogram) is used to diagnose heart rhythm problems. But X-rays and MRI may be used to diagnose a knee injury. X-ray uses electromagnetic energy beams to make images of bones other internal body structures. MRI uses large magnets, radio waves, and a computer to make detailed images of organs and structures in the body.

A. X-rayB. MRIC. ECG

6. A knee ligament can be repaired with a surgery called:

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Arthroscopy is commonly used to repair a torn ACL. In this procedure, the surgeon puts tiny surgical tools into the knee, along with the scope, through small incisions. Pictures sent to a video screen let the surgeon see and work inside the knee.

A. AngioplastyB. ArcostomyC. ArthroscopyD. Osteotomy

7. The ACL can be rebuilt with a piece of your own knee or leg tendon.

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The correct answer is

The ACL can be rebuilt with a tendon from around your knee. The material used to rebuild it is called a graft. Often a graft comes from the patellar tendon or the hamstring tendon.

A. TrueB. False

Your score was:

Online Medical Reviewer: Joseph, Thomas N, MD
Online Medical Reviewer: Wojcik, Stacey, MBA, BSN, RN

Date Last Reviewed: 6/1/2021

© 2000-2023 The StayWell Company, LLC. All rights reserved. This information is not intended as a substitute for professional medical care. Always follow your healthcare professional's instructions.

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