Biomechanics - Knee

tibiofibular joint is considered part of the _____

ankle

2 principal articulations of the knee joint

patella femoral, tibiofemoral

tibiofemoral joint is a double ________ joint

condyloid

what femoral condyle is larger?

medial

the lateral tibial plateau _____ is thicker, even though it has a smaller surface area.

cartilage

the tibia has a ____ slope.

posterior

the tibiofemoral alignment creates a ____ angle of up to 5 degrees

valgus

the longitudinal axis of the femur is ______

oblique

genu valgum presents with a ______ load medially and ______ load laterally

tensile, compressive

genu varum presents with _____ load laterally, ____ load medially

tensile, compressive

mechanical axis is the path from head of the ______ to head of the _____.

femur, talus

the tibialcondyles are essentially ______ leading to poor stability.

convex

the menisci functions mainly as a _____ _____.

shock absorber

meniscus is ________.

fibrocartilage

the medial meniscus is ____ shaped and the lateral is almost a _____.

C, circle

the ____ condyle is more expose

medial

meniscus: anterior and posterior horns attach to the ______

tibia

meniscus: the anterior horn is attached by the ____ ligament

transverse

meniscus: ____ ligaments attach the meniscus to the tibia at the periphery

coronary

the medial meniscus attaches to the ______, which restricts movement.

MCL

the medial meniscus is attached to the ____, _____, and ____.

ACL, PCL, semimembranosus

the _____ meniscus is very stable but also at greater risk for injury

medial

why is the lateral meniscus at less risk of injury?

it floats

the lateral meniscus attaches to the ____,____ and the ______ _____.

ACL, PCL, meniscofemoral ligement

when you remove the meniscus you ______ contact area and femoral force.

increase

how does meniscus get nutrients?

imbibition

when weight bearing, vascularity decreases to the _____ portion of meniscus.

outer

T/F: the knee capsule is tight and restricts motion

F: is is large and lax

what restricts motion in the knee joint capsule?

intraarticular ligaments and the capsule