Ch 18: Knee Flashcards
joints of the knee - types of joints
tibiofemoral
-synovial / modified hinge
proximal tibiofibular
-synovial / planar
1st 3 ligaments of the knee
fibular collateral
tibial collateral
anterior cruciate
2nd 3 ligaments of the knee
posterior cruciate
transverse
meniscofemoral
ligament action:
-fibular collateral
-tibial collateral
resist adduction
resist abduction
ligament action:
-ACL
-PCL
- resists anterior translation of the tibia
- resists posterior translation of the fibula
ligament action:
-Transverse
-Meniscofemoral
- anchors meniscus
- -from medial to lateral meniscus
-is the attachment point of some muscles
anterior thigh muscles
rectus femoris vastus lateralis vastus medialis vastus intermedius sartorius
what do all anterior thigh muscles share?
- all extend knee
- all insert onto the tibial tuberosity
rectus femoris origin
anterior, inferior iliac spine
vastus lateralis origin
linea aspera
vastus medialis origin
linea aspera
vastus intermidius origin
anterior femur
sartorius origin
anterior, superior iliac spine
what are the muscles part of the Pos Anserinus
Sartorius
Gracilis
Semitendinosus
medial thigh muscles
Gracilis (HA! Singular)
origin of gracilis
anterior pubis
insertion of gracilis
medial tibial tuberosity
action of the gracilis
flexes knee
abducts hip
posterior thigh muscles
semitendinosus
semimembranosus
biceps femoris
semitendinosus origin
ischial tuberosity
semitendinosus insertion
medial tibial tuberosity
semitendinosus action
flexes of knee
extends hip
semimembranosus origin
ischial tuberosity
semimembranosus insertion
posterior, medial condyle of tibia
semimembranosus action
flexes the knee
extends the hip
biceps femoris origin
1st head: ischial tuberosity
2nd head: linea aspera
biceps femoris insertion
posterior, lateral condyle of the tibia
head of the fibula
