knee j

Question 1

how does the knee j become unlocked

Answer 1

femur is rotated lat 5 degrees by popliteus m

Question 2

what happens at the knee joint when flexed and extended

Answer 2

flex- femoral condyle will roll post while gliding ant

ext- femoral condyle will roll ant while grinding post

Question 3

medial menicus shape and what does it cover

Answer 3

• c shape
• ant horn will attach to acl + intercondylar area

-post will terminate at the post horn and attach to medial tubercle and intercondylar eminence

Question 4

lat menaces shape and what does it cover

Answer 4

• more o shaped
• ant horn attaches to lat tubercle of intercondylar eminence and ant intercondylar area terminating at post horn attaching on post tubercle and intercondyler area

Question 5

what connect the two meniscus together

Answer 5

transverse lig of knee

Question 6

Attachments of medial meniscus (5)

Answer 6

• ACL
• Tibial collateral lig (MCL)
• Semimembransus tendon
• coronary lig
• transverse lig of knee

Question 7

Attachments of lat meniscus (4)

Answer 7

• popliteal tendon
• post meniscofemoral lig
• transverse lig of knee
• coronary lig

Question 8

what is chondromalacia patellae (runners knee) due to

Answer 8

degeneration of hyaline cartilage due to a weak vastus medals

Question 9

what makes up the post articular fibrous capsul

Answer 9

continuation of semimenbranosus tendon, oblique popliteal lig, and arcuate lig

Question 10

in the post fibrous capsule there is an opening for this

Answer 10

popliteus tendon

Question 11

what makes up the ant fibrous capsule

Answer 11

-tendon of the quadriceps femurs, lateral and medial patellar retinaculum

Question 12

what does the synovial membrane attach to

Answer 12

• periphery of art cartilages of condyles
• meniscal edges
• patellar edges

Question 13

what does the synovial membrane form (3)

Answer 13

• suprapatellar reflection
• infrapatellar synovial fold
• lateral alar synovial fold

Question 14

normal bursae of the knee

Answer 14

• supra patellar bursa
• subcutaneous prepattelar bursa (under patellar tendon)
• deep infra patellar bursa (b/w tibial tub + patellar lig)
• Superficial infrapatellar bursa (skin and patellar lig)

Question 15

where is the ansernine bursa found

Answer 15

bw TCL and pes ascerine

Question 16

what are the 3 bursa on the lat side of the knee

Answer 16

• It tract bursae
• Fibular collateral lig bursa
• biceps femoris bursa

Question 17

what is prepatellar bursitis caused by

Answer 17

by friction between skin and patella- develops in people who work on their knees alot

Question 18

attachments of oblique popliteal lig

Answer 18

continuation of semimembranosus tendon

to post fibrous capsule, lat femoral condyle

Question 19

fibular collateral lig attachments

Answer 19

lat femoral epicondyle to fibular head

Question 20

Arcuate popliteal lig attachments

Answer 20

-arches over popliteus

from fibular head to tibial intercondylar area

Question 21

attachments of ACL

Answer 21

from- lat femoral condyle (post)

to- ant intercondylar area + med menisucs

Question 22

what does ACL limit

Answer 22

post rolling of femoral condyles + ant displacement of tibia

Question 23

PCL attachments

Answer 23

from med femoral condyle (lat/ant)

to post intercondylar area

Question 24

what does PCL limit

Answer 24

ant rolling of femur during ext and post displacement of tibia

Question 25

what are the 3 main branches that supply the knee j

Answer 25

femoral, popliteal and ant tibial

Question 26

how are acls typically injured

Answer 26

internally rotated in deeply flexed pos

Question 27

how are PCLS typically injured

Answer 27

hyper flexion and post directed force on prox tib

Question 28

what is the unhappy triad and how does it typically occur

Answer 28

acl torn
mcl torn
medial meniscus torn

-blow to lat side of knee, twist w flexed foot