Common Mechanisms of Injury to the ACL

Background

100

What does "ACL" stand for?

Anterior Cruciate Ligament 

200

True or false: A totally ruptured ACL is the least common injury of a ligament in the knee.

False: It is the most common

300

What are some of the common symptom of an ACL tear?

•Pain on the outside and back of the knee

•Swelling of the knee

•Limited knee movement

•The knee buckling or giving out

400

What two bones does the ACL connect to provide stabilization for the knee? 

Femur and Tibia 

500

What type of motions can cause injury to the ACL?

Landing after a jump or a cutting motion

Strengths

100

True or false: The ACL allows the knee to be stable throughout motions

True

200

What type of motion is knee flexion an example of?

Closed Chain

300

Which bone does the ACL resist anterior translation of?

Tibia 

400

Which bone does the ACL resist posterior translation of?

Femur

500

True or false: Having adequate strength in your ankles and core can help prevent an ACL injury 

FALSE: Hips and thighs 

Limitations

100

What type of rotation of the femur is involved in ACL injuries?

Internal rotation

200

True or False: ACL tears are mostly caused by walking or sitting down

FALSE: change of direction or landing after a jump 

300

What activated muscle over the extended knee is involved with ACL injuries?

Quad 

400

True or False: Excessive internal rotation of the knee can lead to an ACL injury

FALSE: External rotation 

500

True or False: Valgus collapse of the knee is outward 

FALSE: Inward 

How it Relates to Kinesiology

100

What is a kinematic movement that the ACL provides stability against?

Translation (anterior tibial) or rotation (internal)

200

What are the most common treatments for injury to the ACL?

surgery (if complete tear) or if not complete tear rest and other rehab methods

300

Is resisting anterior translation of the tibia the open-chain or closed-chain function of the ACL?

Open-chain

400

What role may a kinesiologist play in working with a patient who injured their ACL?

They develop a rehabilitation plan and future prevention strategies

500

 What is one ACL- related benefit of kinesio taping?

It can reduce risk of ACL injury, treat pain and swelling, strengthen hamstring, and improve knee flexion range of motion.