orthopedics knee injuries

Question 1

sports knee injuries include

Answer 1

ligament tears, meniscus tears, patellar dislocation, knee dislocation, tendon rupture

Question 2

ACL function

Answer 2

prevent anterior movement of tibia on femur. o: medial lateral femoral condyle, I: ant/lateral medial tibia

Question 3

PCL function

Answer 3

prevent anterior movement of tibia on femur. o: posterior lateral condyle. I: posterior tibia,

Question 4

ACL tear senario

Answer 4

NOT contact

Question 5

PCL tear senario

Answer 5

contact. “dashboard”

Question 6

ACL symptoms

Answer 6

pop, immediate swelling and pain, difficult to bear weight

Question 7

diagnosis tests for ACL

Answer 7

lachman, anterior drawer, pivit shift

Question 8

meniscus composition/function

Answer 8

mostly collagen type I, increases surface between tibia and femur, shock absorb and stability. mainly circumferential fibers to spread out load.

Question 9

meniscus vascular supply

Answer 9

geniculate arteries- decreased supply with age

Question 10

meniscus tear symptoms

Answer 10

gradual swelling, full ROM, tender, medial more common

Question 11

tendon rupture

Answer 11

qaud or patellar. can’t extend knee. risk- steroids, floraquinolones, DM, eccentric muscle contraction