Knee joint structure and actions

The video tutorial provides a comprehensive overview of the knee joint, describing its structure, ligaments, and movements. It explains the knee as a synovial and bicondylar joint, detailing the roles of the femoral and tibial condyles. The tutorial covers the anterior and posterior cruciate ligaments, their functions in restricting tibial movement, and the lateral and medial collateral ligaments' roles in preventing varus and valgus forces. It also discusses the menisci's shock absorption function and the knee's extension, flexion, and subtle rotational movements.

What type of joint is the knee primarily considered?

• Hinge joint

• Ball and socket joint

• Pivot joint

• Saddle joint

Which ligament restricts the forward movement of the tibia on the femur?

• Lateral collateral ligament

• Medial collateral ligament

• Anterior cruciate ligament

• Posterior cruciate ligament

What is the primary function of the lateral collateral ligament?

• Prevent valgus forces

• Prevent varus forces

• Assist in knee flexion

• Assist in knee extension

What role do the menisci play in the knee joint?

• Facilitate rotational movement

• Absorb shock and stabilize the joint

• Assist in knee extension

• Prevent anterior displacement of the tibia

Which muscle group is primarily responsible for knee extension?

• Popliteus

• Quadriceps

• Hamstrings

• Gastrocnemius

What subtle movement occurs when the knee locks during standing?

• Abduction

• Rotation

• Extension

• Flexion

Which muscle helps unlock the knee joint?

• Gastrocnemius

• Popliteus

• Hamstrings

• Quadriceps