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Radiographic Anatomy II > Quiz 1 > Flashcards

Quiz 1 Flashcards

1
Q

What is the range of a normal teardrop distance?

A

Normal = 6-11 mm

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2
Q

What view is required to measure a teardrop distance?

A

AP pelvis or hip or modified lateral

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3
Q

What is waldenstrom’s sign

A

> 11mm (than normal) or > 2mm right vs left from the teardrop distance

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4
Q

What is the ratio of the hip joint space width?

A

4mm: 4mm: 8mm = 1:1:2

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5
Q

What is the range of the superior hip joint space width?

A

3-6 mm

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6
Q

What is the range of the axial hip joint space width?

A

3-7mm

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7
Q

What is the range of the medial hip joint space width?

A

(4-13mm)

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8
Q

What view is required for the hip joint space width?

A

AP hip

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9
Q

How do you measure the acetabular depth?

A

Line from superior pubis at joint margin to upper outer acetabulum; measure from this line to greatest distance to acetabulum floor

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10
Q

What view do you need for acetabular depth?

A

AP pelvis, hip

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11
Q

What is the normal acetabular depth?

A

Male: 7-18mm
Female: 9-18mm

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12
Q

What does an acetabular depth of <9mm?

A

dysplastic

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13
Q

What view is needed for the symphysis pubis width?

A

Ap pelvis

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14
Q

How do you measure the symphysis pubis width?

A

Measure between joint surfaces at halfway point

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15
Q

What are the normal measurements of symphysis pubis width?

A

Male: 5-7mm
Female: 4-6 mm

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16
Q

What view is required for the presacral space measurement?

A

Lateral sacrum

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17
Q

How do you measure the presacral space?

A

Measure soft tissue distance from anterior sacrum to posterior rectum (gas density)

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18
Q

What is the normal range of presacral space?

A

15 yo: 2-20mm

> 20 mm = abnormal soft tissue

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19
Q

What is the view required for acetabular angle?

A

AP pelvis

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20
Q

who do you do acetabular angle on?

A

pediatric patients

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21
Q

How do you measure the acetabular angle?

A

Transverse line through the triradiate cartilages; second line connects lateral and medial acetabular surfaces; measure angle formed

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22
Q

What is the normal measurement of acetabular angle?

A

12-29 degrees

23
Q

What is the measurement of protrusio acetabuli also known as?

A

Kohler’s line

24
Q

what view do you need to measure protrusio acetabulli?

A

Ap pelvis, hip

25
Q

How do you measure the protrusio acetabuli?

A

tangential line to margin of pelvic inlet and outer border of obturator

26
Q

What is the normal measurement of protrusio acetabuli?

A

acetabular floor should not cross the tangential line drawn

27
Q

What is the femoral neck angle?

A

Formed by the axis of the femoral neck with the axis of the femoral shaft

28
Q

What is the normal range of the femoral neck angle?

A

Should be between 120 -130 degrees

29
Q

What is coxa vara?

A

Value < 120 degrees

30
Q

What is coxa valgum?

A

> 130 degrees

31
Q

How do you measure shenton’s line?

A

Follow the inferior margin of the superior pubic ramus and note the smooth continuity with the medial femoral neck

32
Q

What does an interrupted shenton’s line signify?

A

detection of hip dislocation, femoral neck fracture and slipped femoral capital epiphysis

33
Q

How do you measure the iliofemoral line?

A

Follow the lateral margin of the ilium noting a smooth curvilinear line continuing with the femoral head and neck

34
Q

what does the offset or asymmetry of the iliofemoral line signify?

A

May indicate congenital hip dysplasia, old or new fracture, bone softening disease

35
Q

how do you measure skinner’s line?

A

Draw a line parallel to and along the midshaft of the femur, draw a second line perpendicular to the first which is tangential to the tip of the greater trochanter

36
Q

What should be seen in a skinner’s line?

A

This line should pass through or below the fovea centralis of the head of the femur

37
Q

What is Klein’s line?

A

A line constructed tangential to the outer margin of the femoral neck and parallel with the neck

38
Q

Where should the Klein’s line intersect?

A

This line should intersect at or below the fovea centralis some portion of the femoral head. The femoral head overlap should be the same bilaterally.

39
Q

What view(s) can the Klein’s line be drawn on?

A

Both Modified lateral and AP

40
Q

What are the routine diagnostic views of the ankle

A

AP Ankle
Medial Oblique Ankle
Lateral Ankle

41
Q

What is measured in Boehlers Angle

A

Three highest points on the superior surface of the calcaneus are connected with two tangential lines

42
Q

What are the normal values for Boehlers Angle

A

28-40 degrees

43
Q

What is indicated when Boehlers angle is less than 28 degrees

A

calcaneal fracture or dysplastic calcaneus

44
Q

What are the normal values for a heel pad measurement

A

Males: 25mm
Females: 23mm

45
Q

What is the formula for heel pad measurement adjustments

A

Add 1mm for every 25lbs past 150lbs

46
Q

What are the routine views for the knee

A

AP Knee

Lateral Knee

47
Q

How should the patient be positioned when performing a lateral knee view

A

30-45 degree knee bend so that the patella sits in its groove

48
Q

What is being evaluated in the patellar position measurement

A

to see if the tendon length is the same (within 20%) as the patellar length

49
Q

What is the condition referred to if the patellar tendon length is greater than 20% longer than patellar length

A

Patella alta

50
Q

What is the condition referred to if the patellar tendon length is more than 20% shorter than the patellar length

A

Patella baja

51
Q

What is the normal angle for patellar sulcus

A

138 degrees +/- 6degrees

52
Q

How do you measure lateral patellar displacement?

A

One line tangential to femoral condyles; a second line perpendicular at the margin of the medial articular surface

53
Q

Where should the second line of the lateral patellar displacement be in relation to the patella?

A

< or equal to 1mm medial to patella

54
Q

What will signify a lateral patellar displacement in lateral patellar displacement?

A

> 1mm medial

Radiographic Anatomy II (2 decks)

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