Acute Disorders of the Knee

Which of the following conditions would fit under 'common' acute injuries of the knee? Select all that apply.

• ACL sprain

• PCL sprain

• MCL sprain

• Medial meniscus tear

• LCL sprain

Patellar dislocation and articular cartilage injuries are both 'common' conditions of acute knee injury.

• True

• False

Which of the following conditions are considered 'not to be missed' acute injuries of the knee? Select all that apply.

• Fracture of the tibial plateau

• Quadriceps tendon rupture

• Osteochondritis dissecans

• CRPS

• Quadriceps muscle rupture

What is the order of examination for acute knee injuries? Match the following stages of examination with the corresponding number.

• Passive physiological

• 3

• Active movements

• 1

• Special tests

• 2

• Functional tests

• 4

• Observation

• 5

What are the functional roles of the ACL? Select all that apply.

• Resist anterior translation of femur on tibia

• Resist posterior translation of femur on tibia

• Resist internal rotation of tibia

• Resist ab/ad of tibia in full extension

• Resist ab/ad of tibia in 30 degrees flexion

Match the following traumatic events with their MOST LIKELY resultant knee injury.

• MCL tear

• Deceleration / pivoting

• ACL tear

• Fall on flexed knees / hyperextension

• Meniscus tear

• Valgus force / twisting

• Patella dislocation

• Twisting / shearing in weight bearing

• PCL tear

• Powerful quads contraction against internally rotated femur

What test identifies the presence of intracapsular effusion at the knee joint?

• Thompson's test

• Posterior sag test

• Brush swipe test

• 90-90 test

Which of the following options are correct risk factors for ACL injury? Select all that apply.

• Greater Q angle

• Hyper mobile joints

• Quadriceps dominance (hamstring weakness)

• Hamstring muscle dominance

The posterior cruciate ligament is twice as strong as the anterior cruciate ligament.

• True

• False

Select the correct mechanisms for a PCL injury from the options below. Select all that apply.

• Hyper-extension of the knee

• Valgus forces through the knee joint

• Pivoting, twisting, or torsion of the knee

• Dashboard knee (motor vehicle accident)

• Falling on flexed knee