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Flashcards in exsc 460 exam 3 Deck (147)
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1

The posterior surface of the patella is covered by a layer of cartillage approximately how thick?

5mm

2

The anterior surface of the patella is______

convex and rough

3

what's the most important function of the patella?

increases the efficiency of the quadriceps by increasing the lever arm

4

what's the relationship of the patellafemoral articulation?

when the knee is fully extended patellofemoral contact is almost nil and forces are less than body weight

5

maximum patellar tendon tension occurs between _____?

30-60d of knee flexion
this increases the forces at patellofemoral articulation

6

walking on a level surface generates forces at the patellofemoral articulation of _____ of patellar surface

27kg/cm2

7

walking downhill exerts forces of almost ____ times body weight

2

8

walking up stairs generates forces of ____ times body weight

2.5

9

when knees are flexed at 90d with feet dangling, the patella should ______

face forward and very nearly rest on distal end of femur

10

What should you look for when observing thigh posture?

symmetry between legs
any muscular atrophy

11

the angle formed by lines bisecting the neck and shaft of the femur

angle of inclination

12

at birth the angle of inclination is _____

150

13

with ambulation this angle decreases to _____

120-135 with average of 125

14

angle the femoral neck makes with femoral condyles in the frontal plane, or degree of forward projection of femoral neck from frontal plane of shaft

femoral anteversion

15

at birth the angle of femoral anteversion is usually _____

30 to 40 degrees

16

the normal angle of femoral anteversion at adulthood ranges from _______

8-15 degrees

17

a deviation of the lower third of the tibia toward the midline of the body

tibia vara

18

etiology of tibia vara

irregularities of medial epiphyseal plate
retarded unilateral medial epiphyseal plate activity in adolescent cases

19

upon weightbearing, tibia vara looks similar to ______ deformity?

heel valgus

20

what else may accompany tibia vara?

internal tibial torsion and genu recurvatum

21

what is a compensation for tibia vara?

pronation occurs to bring calcaneus vertical to the ground and forefoot in contact with ground

22

treatment for tibia vara?

orthotics
serious epiphyseal plate pathology may require surgical correction

23

deformity consisting of lateral angulation of the knee joint with distal lower leg closer to midline than normal

genu varum

24

etiology of genu varum

sleeping habits
disturbance of epiphysis, tibial plateau fracture
ADL's-squatting
rickets-failure to ossify
congenital

25

when diagnosing genu varum with legs apart, _____

there is greater than a 1 to 2 ratio between the intercondylar space and the intermalleolar space

26

what often accompanies genu varum?

internal tibial torsion
pronation due to natural compensation

27

1st degree genu varum

1-3 inches apart at knee with malleoli touching

28

2nd degree genu varum

3-5 inches apart at knee with malleoli touching

29

3rd degree genu varum

>5 inches apart at knee with malleoli touching

30

By what age are legs straight?

18 months