knee

Question 1

ACL

Answer 1

Femoral attachment: posteromedial aspect of the lateral femoral condyle
Tibial insertion: anterior tibial eminence
divided into two bundles AM - tight in flexion, PL- tight in ( named by their insertion site on tibia)
extension
length 30 mm diameter 11 mm , composed mostly of type 1 collagen
blood supply : middle genicular A
contain mechanoreceptorors

Question 2

ACL function

Answer 2

Resists anterior tibial translation in knee
flexion

Question 3

PCL

Answer 3

Femoral attachment : anterolateral medial femoral condyle
Tibial insertion tibial sulcus below articular surface
divided into two bundles AL - tight in flexion, PM- tight in
extension
length 38 mm diameter 13 mm
blood supply : middle genicular A

Question 4

PCL function

Answer 4

resist posterior tibial translation at all degrees of knee
flexion.

Question 5

MCL

Answer 5

Origen: medial epicondyle of the femur
proximal insertion: o soft tissue overlying
anterior arm of semimembranosus
distal insertion: directly to bone 6-7 cm from the joint line
length 100-120mm

Question 6

the insertion site of biceps femoris relative to LCL on fibula

Answer 6

posterior

Question 7

The roll of AM bundle of ACL

Answer 7

restraining anterior tibial translation

Question 8

The roll of PL bundle of ACL

Answer 8

responsible for rotational stability (pivot shift test)