Quiz on Knee Joint

What is the largest joint of the body classified as a condyloid joint?

• Hip joint

• Knee joint

• Shoulder joint

• Elbow joint

Which ligament is the primary restraint to the anterior displacement of the tibia on the femoral condyles?

• Lateral collateral ligament

• Posterior cruciate ligament

• Medial collateral ligament

• Anterior cruciate ligament

What is the function of the menisci in the knee joint?

• Absorb shock

• Increase pressure between femur and tibia

• Decrease contact area by 70%

• Increase friction by 20%

What is the Q-angle in males when the knee is in extension?

• 25 degrees

• 18 degrees

• 13 degrees

• 8 degrees

What is the primary cause of genu recurvatum?

• Paralysis of the knee flexors

• Neuro-muscular disease causing spasticity of the quadriceps muscles

• Poor postural control

• Chronic over powering knee flexion torque

What is the mechanical function of the patella in the knee joint?

• Centralize divergent tension of quads into multiple lines of action

• Decrease the angle of pull of quads on tibia

• Increase the angle of pull of quads on tibia

• Protect the posterior aspect of the knee

What is the angle formed by the Q-angle?

• Line from the femur to the patella

• Line from the patella to the tibial tuberosity

• Line from the ilium to the tibial tuberosity

• Line from the ilium to the patella

What is the primary function of the lateral collateral ligament in the knee joint?

• Resist hyperextension of the knee

• Resist valgus stresses

• Resist varus stresses

• Limit medial rotation of tibia

What is the screw home mechanism of the knee joint?

• Internal rotation with extension

• External rotation with extension

• Internal rotation with flexion

• External rotation with flexion

What is the function of the popliteus muscle in the knee joint?

• Initiate knee extension

• Retract the medial meniscus

• Resist varus stresses

• Resist tibial external rotation