PCL Injuries Quiz

What is the role of the PCL in knee stability during flexion?

• It decreases stability

• It has no effect on stability

• It increases stability

• It only affects stability during extension

What is the PCL's relationship with knee flexion?

• It decreases stability during flexion

• It has no effect on flexion

• It increases stability during flexion

• It only affects extension

What type of trauma is frequently associated with additional knee injuries in PCL cases?

• High-energy trauma

• Low-energy trauma

• Repetitive stress trauma

• Psychological trauma

What can knee dislocation cause if not recognized and treated immediately?

• Severe morbidity from vascular disruption

• Mild discomfort

• Temporary numbness

• Skin rash

What is a common presentation of PCL injuries sustained from low-energy trauma?

• Gross instability

• Immediate severe pain

• Complete immobility

• Skin discoloration

What is a sign of a PCL injury in the posterior sag sign (Godfrey test)?

• Tibia sags above the level of the uninjured side

• Tibia sags below the level of the uninjured side

• Tibia remains at the same level as the uninjured side

• Tibia moves laterally

In the quadriceps active test, what happens to the tibia in a PCL-deficient knee?

• Tibia translates posteriorly

• Tibia translates laterally

• Tibia translates anteriorly

• Tibia remains stationary

Which of the following is NOT a sign of associated ligamentous injury in an isolated PCL injury?

• Positive testing for MCL injury

• Positive testing for LCL injury

• Positive testing for ACL injury

• Negative testing for MCL, LCL, and ACL injury

What is the posterior displacement range for a Grade 1 PCL injury?

• 0 to 5 mm

• 5 to 10 mm

• 10 to 15 mm

• 15 to 20 mm

What is the posterior displacement for a Grade 3 PCL injury?

• Less than 5 mm

• 5 to 10 mm

• Greater than 10 mm

• 0 to 5 mm