Anterior Cruciate Ligament Quiz

What is the primary function of the anterior cruciate ligament (ACL)?

• Stabilizing the shoulder joint

• Stabilizing the knee joint

• Stabilizing the hip joint

• Stabilizing the ankle joint

How many ACL ruptures occur annually in the United States?

• Between 50,000 and 100,000

• Between 100,000 and 200,000

• Between 200,000 and 300,000

• Between 300,000 and 400,000

What is a common symptom of a noncontact ACL injury?

• Headache

• Feeling a "pop" in the knee

• Nausea

• Dizziness

What is a common associated injury with an acute ACL injury?

• Fractured wrist

• Meniscus injury

• Dislocated shoulder

• Sprained ankle

Which test has a specificity of 98 percent for ACL rupture?

• Lachman test

• Pivot shift

• Anterior drawer

• Posterior drawer

What is the Forced Active Buckling Sign suggested for?

• Diagnosing meniscal injury

• Evaluating ACL injury

• Testing posterior collateral ligament

• Measuring anterior-posterior translation

What is the primary modality used to diagnose ACL rupture?

• Ultrasound

• X-ray

• Magnetic Resonance Imaging (MRI)

• Multidetector Computed Tomography (MDCT)

At what age is ACL reconstruction generally successful according to observational studies?

• Older than 30 years

• Older than 40 years

• Older than 50 years

• Older than 60 years

What is NOT a factor influencing an athlete's decision to return to play?

• Fear of reinjury

• Access to high-quality medical services

• Psychological investment in sport

• Lack of motivation

What is believed to be a major factor in the risk for OA after an ACL injury?

• The severity of the initial trauma

• The patient's height

• The type of footwear

• The patient's occupation