Arthrology: Ligaments of Knee and Leg

Question 1

Fibrous capsule of knee

Answer 1

attachments- from the margins of the femoral condyles to the margins of the tibial condyles

Question 2

Tibial (medial) collateral

Answer 2

attachments- from the medial epicondyle of the femur to the medial condyle & shaft of the tibia deep to the sartorius and deep to the pes anserinus.

function- stabilizes the medial aspect of the joint; resists valgus force at the tibiofemoral joint

Question 3

Fibular (lateral) collateral

Answer 3

attachments- from the lateral epicondyle of the femur to the head of the fibula

function- stabilizes the lateral aspect of the joint; resists varus force at the tibiofemoral joint

Question 4

Anterior cruciate (ACL)

Answer 4

attachments- from the medial part of the anterior intercondylar area of the tibia to the posterior part of the medial surface of the lateral condyle of the femur

function-
prevents posterior displacement of the femur on the tibia/prevents anterior displacement of the tibia on the femur

prevents hyperextension of the knee and limits rotation of the tibia on the femur.

Question 5

Posterior cruciate (PCL)

Answer 5

attachments- from the posterior intercondylar area of the tibia to the lateral surface of the medial condyle of the femur

function- prevents the anterior displacement of the femur on the tibia/prevents posterior displacement of tibia on the femur

Question 6

Medial meniscus

Answer 6

attachments- anterior & posterior regions of the intercondylar area of the tibia & fibrous capsule at the tibial collateral ligament

Question 7

Lateral meniscus

Answer 7

attachments- anterior & posterior regions of the intercondylar area of tibia

Question 8

Patellar ligament

Answer 8

attachments- from the apex of the patella to the tibial tuberosity

function- resists knee flexion, serves as component of extensor mechanism for quadriceps mm. to extend the tibia on the femur

Question 9

Medial patellofemoral

Answer 9

attachments – proximal 50% of medial patella to the medial epicondyle of the femur

function – restrains against patellar lateral displacement

Question 10

Crural interosseous membrane

Answer 10

attachments- from interosseous border of the tibia to the interosseous border of the fibula