Knee joint SDL

Question 1

What are the three articulations in the knee joint?

Answer 1

Medial femerotibial
Lateral femerotibial
Femeropatellar

Question 2

In what way is the pull of vastus medialis different to the rest of the quadriceps? Why?

Answer 2

much more oblique angle to prevent the patella being pulled too far laterally, in combination with the bony ridge on the lateral femoral condyle it prevents dislocation

Question 3

Where does the ACL attach?

Answer 3

anterior intercondylar region of the tibia
(Travels supero-anteriorly)
to the medial femoral condyle

Question 4

What is the function of the ACL

Answer 4

Prevents anterior displacement of the tibia on the femur and prevents hyperextension

Question 5

Where does the PCL attach?

Answer 5

Posterior intercondylar region of the tibia
(travels superoposteriorly)
To the lateral femoral condyle

Question 6

What is the function of the PCL

Answer 6

Prevents posterior displacement of the tibia on the femur, prevents hyperflexion, stabiliser of flexed knee when weight bearing.

Question 7

What is often injured at the same time as the MCL and why?

Answer 7

medial meniscus as they are attached

Question 8

What movements are possible at the knee joint?

Answer 8

Flexion and rotation