knee j Flashcards
how does the knee j become unlocked
femur is rotated lat 5 degrees by popliteus m
what happens at the knee joint when flexed and extended
flex- femoral condyle will roll post while gliding ant
ext- femoral condyle will roll ant while grinding post
medial menicus shape and what does it cover
- 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
lat menaces shape and what does it cover
- 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
what connect the two meniscus together
transverse lig of knee
Attachments of medial meniscus (5)
- ACL
- Tibial collateral lig (MCL)
- Semimembransus tendon
- coronary lig
- transverse lig of knee
Attachments of lat meniscus (4)
- popliteal tendon
- post meniscofemoral lig
- transverse lig of knee
- coronary lig
what is chondromalacia patellae (runners knee) due to
degeneration of hyaline cartilage due to a weak vastus medals
what makes up the post articular fibrous capsul
continuation of semimenbranosus tendon, oblique popliteal lig, and arcuate lig
in the post fibrous capsule there is an opening for this
popliteus tendon
what makes up the ant fibrous capsule
-tendon of the quadriceps femurs, lateral and medial patellar retinaculum
what does the synovial membrane attach to
- periphery of art cartilages of condyles
- meniscal edges
- patellar edges
what does the synovial membrane form (3)
- suprapatellar reflection
- infrapatellar synovial fold
- lateral alar synovial fold
normal bursae of the knee
- 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)
where is the ansernine bursa found
bw TCL and pes ascerine
what are the 3 bursa on the lat side of the knee
- It tract bursae
- Fibular collateral lig bursa
- biceps femoris bursa
what is prepatellar bursitis caused by
by friction between skin and patella- develops in people who work on their knees alot
attachments of oblique popliteal lig
continuation of semimembranosus tendon
to post fibrous capsule, lat femoral condyle
fibular collateral lig attachments
lat femoral epicondyle to fibular head
Arcuate popliteal lig attachments
-arches over popliteus
from fibular head to tibial intercondylar area
attachments of ACL
from- lat femoral condyle (post)
to- ant intercondylar area + med menisucs
what does ACL limit
post rolling of femoral condyles + ant displacement of tibia
PCL attachments
from med femoral condyle (lat/ant)
to post intercondylar area
what does PCL limit
ant rolling of femur during ext and post displacement of tibia
