Knee Complex

Question 1

Knee complex is composed of 3 bones

Answer 1

o Femur (distal segment)
o Tibia (proximal segment)
o Patella

Question 2

3 articulating surfaces

Answer 2

o Medial Tibiofemoral jt
o Lateral Tibiofemoral jt
o Patellofemoral jt

Question 3

2 flat condyles

Answer 3

plateau

Question 4

larger to withstand greater force or pressure

Answer 4

Medial condyle

Question 5

sits within femoral intercondylar fossa during knee extension

Answer 5

Intercondylar eminence

Question 6

insertion of quads via ligamentum
patella (which is a tendon)

Answer 6

Tibial tuberosity

Question 7

insertion of SGT

Answer 7

Upper medial tibia

Question 8

insertion of ITB

Answer 8

Gerdy’s tubercule

Question 9

Largest sesamoid bone

Answer 9

PATELLA

Question 10

Normal Q angle

Answer 10

o Male: 10-14 degrees
o Female: 15-23 degrees

Question 11

Normal tibiofemoral angle

Answer 11

170-175 degrees

Question 12

↓ lat tibiofemoral angle

Answer 12

GENU VALGUM

Question 13

↑ lat tibiofemoral angle

Answer 13

GENU VARUM

Question 14

Largest joint in the body

Answer 14

TIBIOFEMORAL JT

Question 15

Cover ½ to 2/3 of the articular surface of the tibial
plateau

Answer 15

MENISCI

Question 16

C-shaped

Answer 16

MEDIAL MENISCUS

Question 17

Less mobile

Answer 17

MEDIAL MENISCUS

Question 18

Prone to injury

Answer 18

MEDIAL MENISCUS

Question 19

O-shaped

Answer 19

LATERAL MENISCUS

Question 20

More mobile

Answer 20

LATERAL MENISCUS

Question 21

Less injured

Answer 21

LATERAL MENISCUS

Question 22

Provide medial-lateral stability

Answer 22

COLLATERAL LIGAMENTS

Question 23

What does LCL limit?

Answer 23

Varus force

Question 24

What does MCL limit?

Answer 24

Valgus force

Question 25

Prevents anterior/posterior translation of knee

Answer 25

CRUCIATE LIGAMENTS

Question 26

excessive hyperextension of knee

Answer 26

Genu Recurvactum

Question 27

Occurs at the transverse plane when knee is flexed

Answer 27

AXIAL ROTATION

Question 28

Rotation of the tibia or femur during the last 20d of knee extension

Answer 28

SCREW HOME MECHANISM

Question 29

Patella is too low during knee ext.

Answer 29

Patella baja

Question 30

Patella is too high during knee ext.

Answer 30

Patella alta

Question 31

Largest knee extensor

Answer 31

Vastus Lateralis

Question 32

Purest, deepest, and most efficient knee extensor

Answer 32

Vastus Intermedius

Question 33

Dual role as hip extensor and knee flexor. (Has rotatory functions as well)

Answer 33

Hamstrings

Question 34

Line of gravity passes through medial aspect of knee causing a varus thrust

Answer 34

Compressive Forces

Question 35

Occur during full extension to 90 flexion

Answer 35

Shear Forces

Question 36

Fluid filled sac to protect the structures

Answer 36

Bursa

Question 37

Diamond shaped depression located at the posterior portion of the knee

Answer 37

POPLITEAL FOSSA

Question 38

Lateral wall of PF

Answer 38

Biceps femoris, lateral head of gastroc, plantaris

Question 39

Medial Wall of PF

Answer 39

Semimembranosus, semitendinosus, medial head of gastroc

Question 40

Floor of PF

Answer 40

Popliteal surface of femur, posterior ligament of knee jt, popliteus muscle

Question 41

Roof of PF

Answer 41

Skin, superficial fascia, deep fascia of thigh