Knee Flashcards
The knee works in combination with the ____ and ___ in a closed kinetic chain
Ankle, Hip
The knee is made up of what 2 joints?
Tibiofemoral and Patellofemoral joints
How many capsules are the knee enclosed in?
One
What is the knee enclosed by?
A capsule
The apex of the patella is at which end?
Inferior
What is found on the posterior surface of the patella?
Hyaline cartilage
What nerve is found near the fibula?
Peroneal nerve
The tibiofemoral joint is what type of joint?
Double modified hinge joint
Why is the tibiofemoral joint a double modified hinge joint?
Double- 2 condyles
Modified- rotates slightly when knee is flexed
Hinge- One direction
What separates the tibia on the proximal anterior surface?
intercondylar notch or fossa
What is the articular surface called on the femur at the tibiofemoral joint?
Convex
What is the name of the surface of the tibia at the tibiofemoral joint?
Concave
Which tibial condyle is larger?
Medial is 50% larger than lateral
What is the menisci in the knee made of?
fibrocartilaginous disks
What are the 4 functions of menisci?
1- increase concavity of tibia
2- increase joint congruency
3- distribute forces
4- reduce friction
In a valgus Q angle, is the medial or lateral part of the leg compressed?
Lateral
In a vargus position, which side is compressed and which side is stretched?
Medial is compressed and lateral is stretched
Which position sets you up for an ACL tear?
Valgus
Even with the menisci, the structure of the knee joint must heavily depend on what for support?
Capsule and ligaments
Do muscles help in knee structure?
They do but can not create enough stability themselves alone
Which capsular ligament is injured with valgus force?
MCL
Which ligament resists anterior displacement of the tibia and helps limit rotation?
ACL
Which ligament prevents posterior displacement of tibia?
PCL
Which ligament is injured during vargus force?
LCL
