44: Radiographic Interpretation - Bennett Flashcards Preview

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Flashcards in 44: Radiographic Interpretation - Bennett Deck (41)
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1

which measurements are seen in sagittal plane?

- calcaneal inclination angle
- lateral talocalcaneal angle
- talar declination angle
- first metatarsal declination angle
- inter-relationship of radiographic angles and their importance in the interpretation of biomechanical relationships associated with podiatric radiographs

2

talocalcaneal angle aka

angle of kite
- used to evaluate flatfoot deformity

3

transverse plane angular relationship of the longitudinal bisectors of talus and calcaneus

talocalcaneal angle

4

normal talocalcaneal angle values ***

0-5 yo: 35-50 degrees
5- adult: 15-35 degrees

5

STJ pronation ____ the talocalcaneal angle. STJ supination ______ the talocalcaneal angle

- increases (everted heel)
- decreases

6

a measure of the most lateral surface of the cuboid and the calcaneus

cuboid abduction angle
- indicative of deformity in the transverse plane

7

normal cuboid abduction angle

0-5 degrees

8

pronation leads to ________ cuboid abduction angle

increased

9

gives relative position of the forefoot to the rearfoot in the transverse plane

metatarsus adductus angle
- angle is composed of a bisection of the lesser tarsus and bisection of the second metatarsal

10

normal metatarsus adductus

0-15 degrees

11

metatarsus primus adductus angle

- representation of deviation of first met relative to second

12

normal and adductus metatarssu primus adductus angle

normal 8-12
adductus 8-10

13

evaluation of 1st intermetatarsal angle

- evaluation of hallux abducto valgus
- size of measurement will determine type of procedure you choose to do

14

tibial sesamomid position

- change in sesamoid position relative to bisection of first met head
- 7 positions
- position 1-3 are normal

15

representation of transverse plane position of hallux relative to long axis of the first metatarsal

hallux abductus angle
- quantifies the alteral deviation of the hllux in HAV

16

normal hallux abductus angle

10-15 degrees

17

hallux interphalangeal angle

- represents the lateral hallux deviation at the level of the IP joint
- increases in this value produce a lateral curvature of the hallux which become clinically significant

18

normal hallux interphalangeal angle

0-10 degrees

19

PASA proximal articular set angle

- representation of effective cartilage in relation to the shaft of the metatarsal
- bisection of met and line through articular cartilage line

20

normal PASA

7.5 degrees
- increase is pathological and may either add to a structural or combined deformity

21

normal DASA

7.5 degrees

22

this angle measures the relationship of the effective articulating cartilage of the base of the proximal phalanx

distal articular set angle DASA

23

measurement difference in length b/w first and second mets

metatarsal protrusion distance
- impacts on the procedure one does fro bunion correction if the 1st met is short (most common)

24

normal met protrusion distance

plus minus 2 mm

25

measurement of sagittal plane position of the clacaneus referenced to the plane of support

calcaneal inclinationa ngle

26

normal calcaneal inclination angle

18-21 degrees

27

what decreases and what increases calcaneal inclination angle?

- decreased with pes plano valgus
- increased with cavus foot type

28

a measurement composed of column tali axis and the plane of support

talar declination angle

29

normal talar declination

21 degrees

30

defined as a lazy S curve formed by the TN and CC joints

cyma line