Final: Chapter 10 Flashcards
Knee joint
Largest joint in body
Hinge joint
Patella
sesamoid (floating bone)
Why is inner menisci hard to heal?
Due to poor blood supply
What type of joint is the patellofemoral?
Not a true synovial
Most common injury to the knee
to the Anterior cruciate ligament (ACL)
PCL injury
not often injured
LCL
infrequently injured
MCL
medial stability by resisting valgus
Common injury
Plica
synovial folds of tissue
Bursae
fluid filled sacs outside to inside
Knee ROM
Flexion 140
Hyperextension 10
Rectus femoris
O: anterior inferior illiac spine
I: tibial tuberosity
N: femoral nerve
A: flex hip, extend knee
Vastus lateralis
O: upper half of linear aspera
I: tibial tuberosity
N: femoral nerve
A: flex hip, extend knee
Vastus lateralis
O: upper half of linears aspera
I: tibial tub
N: femoral n.
A: extends knee
Vastus intermedius
O: upper 2/3 of femur
I: tibial tub
N: femoral nerve
A: extends knee
Vastus medialis
O: linea aspera
I: tibial tuberosity
N: femoral nerve
A: Extends knee
Biceps Femoris
O: lower 1/2 of linea asprea
I: head of fibula
N: common fibular n.
A: knee flexion
Popliteus
O: lateral condyle of femur
I: prox. Tibia
N: tibial n.
A: flex knee, internally rotate tibia
Which muscle unlocks the knee?
Popliteus
What are the actions of hamstrings?
Hip ext, knee flexion
Insertion of semitendinosis
pzes an serious
4 ligaments of knee
ACL, PCL, LCL, MCL
Purpose of the patella
increase force of qauds
Which of the quads is a two joint muscle ?
Rectus femoris
