lec 9 femur & patella

Question 1

what is longest and strongest bone in human body

Answer 1

femur

Question 2

four epiphyses of femur

Answer 2

greater trochanter
lesser trochanter
femoral head
one at distal end

Question 3

What is the angle of obliquity?

Answer 3

10-15 degrees
Greater in females than in males
Angle between the shaft of the femur and the line of gravity

Question 4

What is the angle of inclination?

Answer 4

Mean is 126 degrees
Angle between the head & neck of femur and the shaft
less in females

Question 5

What angle denotes Coxa vara?

Answer 5

<120 produces stress on femoral neck

Question 6

What angle denotes Coxa vara?

Answer 6

> 135results in increased joint pressure

Question 7

What is the Q angle?

Answer 7

measured between a line from ASIS to middle of patella

Angles range from 10-14 formales and 15-17 for females

Question 8

small q angle is genu __

Answer 8

varum because stress at medial side of knee

Question 9

large q angle is genu __

Answer 9

valgum

Question 10

How do you side a femur?

Answer 10

Hold the femur in front of you against the smooth side of shaft against your fingers and side the vertical ridge against your thumb.

Question 11

what is linear aspera

Answer 11

line down the femur positioned posteriorly

Question 12

femoral head is covered with

Answer 12

hyaline cartilage except in fovea

Question 13

What is another name for the angle of torsion?

Answer 13

angle of declination

Question 14

Where does the anterior side of the femoral neck join the shaft?

Answer 14

At the intertrochanteric line

Question 15

What three structures contribute to the linea aspera?

Answer 15

Medial lip (pectineal line and spiral line)
Lateral lip (gluteal tuberosity)

Question 16

How does the linea aspera terminate?

Answer 16

Medial supracondylar ridge ends at adductor tubercle

Question 17

What is the surface located between the medial and lateral supracondylar ridges?

Answer 17

popliteal surface

Question 18

what is the raised area of superior aspect of intertrochanteric line

Answer 18

tubercle of femur

Question 19

where does posterior side of femoral neck join shaft

Answer 19

at intertrochanteric crest

Question 20

superiorly where does femoral neck end

Answer 20

greater trochanter

Question 21

inferiorly where does femoral neck end

Answer 21

lesser trochanter

Question 22

intertrochanteric line turns posteriorly to become

Answer 22

spiral line

Question 23

raised area prominence at midpoint of intertrochanteric crest

Answer 23

quadrate tubercle

Question 24

greater trochanter has _ surfaces

Answer 24

medial (concave w/trochanteric fossa)

lateral(conex w/ridge line)

Question 25

lesser trochanter sits ___ end of intertrochanteric crest and ___ to pectineal line

Answer 25

inferior | superior

Question 26

what contributes to medial lip of linea aspera

Answer 26

pectineal line | spiral line

Question 27

what contributes to lateral lip of linea aspera

Answer 27

gluteal tuberosity

Question 28

where is nutrient foramen on linea aspera

Answer 28

midpoint

Question 29

medial and lateral edges become what

Answer 29

medial and lateral supracondylar ridges

Question 30

where does medial supracondylar ridge end

Answer 30

adductor tubercle

Question 31

what is between medial lateral supracondylar ridges

Answer 31

popliteal surface

Question 32

medial condyle projects more ___ in vertical position

Answer 32

inferiorly

Question 33

long axis of lateral condyle more

Answer 33

anterrioly=posteriorly

Question 34

long axis of medial condyle if more

Answer 34

posteriomedialy

Question 35

femoral condyles meet ___ at the ___

Answer 35

anteriorly | patellar articular surface

Question 36

grooves on inferior surface of condyles

Answer 36

meniscal grooves

Question 37

pit-like feature on side of lateral condyle

Answer 37

popliteal groove

Question 38

What does trabecula mean?

Answer 38

beam or supporting fibers of a structure

Question 39

how are trabeculae arranged

Answer 39

along the lines of greatest compression or stress, to resist the loads placed on the femoral head and neck.

Question 40

pressure lamellae resist

Answer 40

compression forces on head of femur by body weight transfer

Question 41

tension lamellae resist

Answer 41

tensile forces due to gluteal muscles on neck of femur

Question 42

lamella are

Answer 42

mature bone with regularly arranged collagen fibers

Question 43

calcar femorale is

Answer 43

plate of bone running from shaft and neck of femur to greater trochanter reinforcing structure

Question 44

What is Ward's triangle?

Answer 44

internal femoral triangle | Inherently weak area between the tension and pressure lamellae

Question 45

What is the order that the secondary ossification centers appear?

Answer 45

``` "Lets go to Havana Cuba" Lesser T Greater T 4 years Head Condyles ```

Question 46

what kind of bone is patella

Answer 46

sesamoid

Question 47

describe anterior surface of patella

Answer 47

rough with vascular foramina

Question 48

describe posterior surface of patella

Answer 48

large superior articular area divided by vertical ridge

Question 49

larger of two patella facets

Answer 49

lateral