T2 L10: Anatomy of the knee (CH)

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Questions and Answers

Which of the following is NOT a movement that can occur at the knee joint?

  • Flexion
  • Adduction (correct)
  • Extension
  • Rotation

What are the main functions of the knee joint?

  • Abduction and circumduction
  • Rotation and adduction
  • Elevation and depression
  • Flexion and extension (correct)

Why is the knee joint frequently injured?

  • It lacks ligaments
  • It has limited mobility
  • It has excessive mobility (correct)
  • It lacks stability

Which of the following factors contribute to the stability of the knee joint?

<p>Bony expansions and locking mechanism (A)</p> Signup and view all the answers

Which of the following is NOT a learning outcome for this lecture?

<p>Describing the anatomy of the fibula (C)</p> Signup and view all the answers

What type of joint is the knee joint?

<p>Synovial joint (B)</p> Signup and view all the answers

Which bones articulate to form the knee joint?

<p>Femur and tibia (C)</p> Signup and view all the answers

Which side of the knee joint is shown in the provided image?

<p>Medial side (B)</p> Signup and view all the answers

Which ligament prevents medial displacement of the tibia?

<p>LCL (B)</p> Signup and view all the answers

Which ligament prevents lateral displacement of the tibia?

<p>MCL (C)</p> Signup and view all the answers

Which ligament is more attached to the knee joint and attaches onto the medial meniscus?

<p>MCL (C)</p> Signup and view all the answers

Which ligament is named according to where it comes off of the tibia and crosses over the other ligament?

<p>ACL (C)</p> Signup and view all the answers

Which ligament prevents the tibia from moving anteriorly on the femur?

<p>ACL (B)</p> Signup and view all the answers

Which ligament prevents the tibia from moving too much posteriorly on the femur?

<p>PCL (C)</p> Signup and view all the answers

What is the function of the cruciate ligaments?

<p>To prevent anterior and posterior displacement of the tibia (B)</p> Signup and view all the answers

Which ligament is commonly sprained or torn in sports injuries?

<p>ACL (C)</p> Signup and view all the answers

Which ligament is responsible for providing stability on the lateral side of the knee?

<p>Lateral collateral ligament (D)</p> Signup and view all the answers

What is the medical term for a bowlegged deformity?

<p>Genu varum (C)</p> Signup and view all the answers

Which angle decreases when the tibia is displaced medially?

<p>Q angle (B)</p> Signup and view all the answers

What can happen if the tibia is displaced laterally?

<p>Increased stress on the lateral side of the knee (B)</p> Signup and view all the answers

What are the three factors that influence the locking mechanism of the knee joint?

<p>The shape of the joint, rotation of the femur, and the position of the center of gravity (B)</p> Signup and view all the answers

What is the purpose of the medial rotation of the femur in the knee joint?

<p>To keep the knee in a locked position (A)</p> Signup and view all the answers

What is the femoral angle, also known as the Q angle, used to measure?

<p>The angle between the anatomical axis and the mechanical axis of the femur (B)</p> Signup and view all the answers

Why is the abducted femur important for weight bearing?

<p>It positions the knee joint underneath the pelvis (A)</p> Signup and view all the answers

Which of the following is the correct definition of the term 'meniscus' in the context of the text?

<p>A type of cartilage in the knee joint (A)</p> Signup and view all the answers

What is the purpose of the meniscus in the knee joint?

<p>To deepen the joint (A)</p> Signup and view all the answers

Which part of the tibia is known as the 'tibial plateau'?

<p>The flattened part of the tibia where the femoral condyles sit on (D)</p> Signup and view all the answers

What is the plural form of 'meniscus'?

<p>Menisci (B)</p> Signup and view all the answers

Which of the following is NOT a role of the meniscus?

<p>Connecting the femoral condyles and tibial plateau (B)</p> Signup and view all the answers

What is the tibial condyle?

<p>A part of the tibial plateau (D)</p> Signup and view all the answers

Which of the following is NOT a function of the knee joint?

<p>Rotation (D)</p> Signup and view all the answers

Which of the following is NOT a bony expansion of the knee joint?

<p>Medial epicondyle (C)</p> Signup and view all the answers

Which factor contributes to reducing the amount of energy required when the knee joint is extended?

<p>Shape of femur (D)</p> Signup and view all the answers

Which ligament prevents lateral displacement of the tibia?

<p>Lateral collateral ligament (C)</p> Signup and view all the answers

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

<p>To absorb shock (A)</p> Signup and view all the answers

Which ligament prevents the tibia from moving too much posteriorly on the femur?

<p>Posterior cruciate ligament (B)</p> Signup and view all the answers

Which of the following is NOT a factor that strengthens the knee joint?

<p>Locking mechanism (B)</p> Signup and view all the answers

What type of joint is the knee joint?

<p>Synovial hinge joint (C)</p> Signup and view all the answers

Which ligament is responsible for providing stability on the lateral side of the knee?

<p>Lateral collateral ligament (D)</p> Signup and view all the answers

Which of the following is NOT a common cause of knee injury?

<p>Excessive flexibility (A)</p> Signup and view all the answers

What muscle is responsible for medially rotating the leg at the knee joint when the knee is flexed?

<p>Semitendinosus (D)</p> Signup and view all the answers

Which ligament passes through the joint capsule and the space under the lateral collateral ligament?

<p>Popliteus (A)</p> Signup and view all the answers

What is the function of the infrapatellar fat pad in relation to the synovial membrane?

<p>It separates the synovial membrane from the patellar ligament (A)</p> Signup and view all the answers

Which bursa is commonly inflamed due to repetitive movements or direct pressure?

<p>Prepatellar bursa (D)</p> Signup and view all the answers

What is the cause of a Baker's (Popliteal) Cyst?

<p>Herniation of the bursa (D)</p> Signup and view all the answers

Which artery supplies blood to the knee joint through genicular branches?

<p>Popliteal artery (C)</p> Signup and view all the answers

What is the term for the abnormal fluid filled sacs in the popliteal fossa?

<p>Baker's (Popliteal) Cyst (D)</p> Signup and view all the answers

What is the function of the synovial membrane in relation to the cruciate ligaments?

<p>It cuffs the anterior surface of the cruciate ligaments (D)</p> Signup and view all the answers

What is the primary function of the iliotibial tract in relation to the knee joint?

<p>To provide stability on the lateral side of the knee (D)</p> Signup and view all the answers

What is the main factor that contributes to the stability of the knee joint?

<p>The medial rotation of the femur (B)</p> Signup and view all the answers

Which ligament is the primary stabilizer of the knee joint when the knee is flexed?

<p>Posterior cruciate ligament (C)</p> Signup and view all the answers

What is the medical term for the deformity characterized by an increase in the Q angle and lateral displacement of the tibia?

<p>Genu valgum (D)</p> Signup and view all the answers

Which ligament prevents medial displacement of the tibia and is attached to the medial meniscus?

<p>Medial collateral ligament (A)</p> Signup and view all the answers

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

<p>To deepen the articulating surfaces and act as shock absorbers (A)</p> Signup and view all the answers

Which ligament prevents lateral displacement of the tibia?

<p>Lateral collateral ligament (D)</p> Signup and view all the answers

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

<p>To prevent anterior displacement of the tibia on the femur (D)</p> Signup and view all the answers

What is the purpose of the medial rotation of the leg in the knee joint?

<p>To tighten the ligaments and limit rotation (D)</p> Signup and view all the answers

What is the correct definition of the term 'meniscus' in the context of the text?

<p>Crescent-shaped plates of fibrocartilage that deepen the articulating surfaces and act as shock absorbers (B)</p> Signup and view all the answers

Which ligament is commonly injured in sports injuries and is known as the 'unhappy triad'?

<p>Anterior cruciate ligament (A)</p> Signup and view all the answers

What is the purpose of the iliotibial tract in the knee joint?

<p>To stabilize the extended knee (C)</p> Signup and view all the answers

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