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Dx Imaging II > FinalQuizlet > Flashcards

FinalQuizlet Flashcards

1
Q

Infection of skin, subcutaneous fat, or CT (tendons/ligs/muscles)

A

cellulitis

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2
Q

infection of bone (marrow spaces)

A

osteomyelitis

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3
Q

infection of joint (synovial tissue or articular surfaces)

A

septic arthritis

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4
Q

Drug addicts are MORE PRONE to __ joint infections?

A

S (sacroiliac, sternoclavicular, symphysis pubis, spine, etc.)

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5
Q

The MC infectious organism

A

staphylococcus aureus

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6
Q

MC route of dissemination for an infection

A

hematogenous

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7
Q

growth plates INHIBIT only __ spread of infections?

A

hematogenous

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8
Q

MC location for an infection in the body?

A

KNEE

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9
Q

two major categories of musculoskeletal infection

A
  1. suppurative (pus) caused by staphylococcus aureus

2. non-supporative (Tb)

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10
Q

Which stage has s/s present for 1-10 days before it can actually be seen on a radiograph?

A

latent (hidden) stage

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11
Q

during LATE stage -chalky white area of isolated dead bone?

A

sequestrum

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12
Q

Brodie’s abscess formation:

  • caused by what infection?
  • localized pain that’s worse at night Pain is relieved by NSAID. Mimics what tumor?
A

osteomyelitis (bone marrow)

osteoid osteoma

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13
Q

Ddx for infection vs. tumor

A

infection no respect for GP or jt space

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14
Q

Early radiographic finding of infection at hips would be an increased __ of greater than __ mm?

A

teardrop distance: 11mm

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15
Q

___ have sacroilitis/SI joint infections MC than any other?

A

Intravenous drug users

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16
Q

MC spinal site for spinal infection

A

lumbar spine

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17
Q

t/f, plain films are NOT sensitive exams to things like tumors or infections?

A

TRUE

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18
Q

OM MRI Findings

A

decreased signal on T1 increasead on T2

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19
Q

radiographic latency period is __ days long ?

A

10

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20
Q

MC cause of infection-related death ww is (king of disease) ?

A

tuberculosis

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21
Q

Tb (nonsuppurative osteomyelitis) is aka ___?

A

pott’s disease

22
Q

Primary Tb location

Secondary Tb MC in

A

lungs, spine multi level

23
Q
  • paraspinal cold abcessesw/Ca
  • gibbus formation
  • s/s include fever, chills, night sweats, weight loss
A

Tb

24
Q

Phemister’s triad is made up of what 3 components? “phemister’s JaMS!!!!”

A
  1. juxtarticular osteoporosis
  2. marginal erosion
  3. slow joint space loss
25
Q

MC location for AVN; AVN has epiphyseal predisposition especially for __

A

HIP, femur and humeral head

26
Q

Causes of AVN? (plastic rags)

A 
pancreatitis/pregnancy
Legg-calve-perthes/Lupus
Alcoholism/atherosclerosis
Steroids
Trauma
Idiopathic/infection
Caisson disease/collagen disease
RA/radiation tx
Amyloid
Gaucher disease
Sickle cell disease
27
Q

4 stages of AVN?

A
  1. avascular
  2. revascularization
  3. repair
  4. deformity
28
Q

Results from medullary bone falling away from the cortex, leaving a radiolucent line between the medullary cavity and the cortex?

A

Cresecent/Rim sign

29
Q

AVN of a child’s femoral head

A

legg-calve-perthes disease

30
Q

AVN in an adult femoral head

A

Chandler’s disease

31
Q

BIG 4 radiographic signs of AVN?

A
  1. snow cap sign
  2. crescent/rim sign
  3. mushroom deformity
  4. hanging rope sign
32
Q

-List 3 signs you’ll see on a radiograph ?

A

ANSWERS:

33
Q
  1. small epiphysis
  2. ST swelling (inc. TDD >11mm)
  3. lateral displacement of ossification center
A

Radiographic signs of Legg-Calve-Perthes disease

34
Q

adolescent males, MC knee medial femoral condyle, joint mouse rad finding

A

Osteochondrosis dessicans

35
Q

AVN of the knee, associated with medial meniscal lesions

A

SONK spontaneous osteonecrosis of the knee

36
Q

Fragmentation of tibial tuberosity apophysis

A

Osgood Schlatters

37
Q

AVN of 2nd metatarsal head, females

A

Friebergs disease

38
Q

AVN of lunate, males 20-40, ulnar variance

A

Keinbocks disease

39
Q

AVN or normal anatomy of tarsal navicular

A

Koehler’s disease

40
Q
  • Not a necrosis
  • increased kyphosis
  • 5degree anterior body wedging in 3 or more contiguous vertebrae
  • Schmorl’s nodes present
A

Scheuermann’s disease/Juvenile discogenic disease

41
Q

sclerosis and fragmentation of calcaneal apophysis

A

Sever’s disease

42
Q

Serpiginous like regions of calcification within the bone medulla

A

calcified medullary infarct

43
Q

MC in AAs

  • pain and swelling hands & feet
  • salmonella OM predisposition
  • infarct of bowel following obstruction of mesenteric arteries
A

sickle cell anemia

44
Q

sickle cell anemia rad Findings

A
  • H shaped vertebrae
  • hair on end skull
  • long bone underturbulation
45
Q

Thalassemia has what type of trabeculation pattern ?

A

honeycomb

46
Q

what two diseases have hair on end skull and which is MORE predominate?

A

Sickle Cell Anemaia and Thalassemia *more predominate

47
Q

MC hemolytic anemia?

A

sickle cell anemia

48
Q

Hemophilia two distinct radiographic features

A
  1. square femoral condyles

2. widened intercondylar notch

49
Q

bony collar where pus lifts periosteum and causes new bone formation?

A

involucrum

50
Q

ulcerative channel/sinus in bone?

A

cloca

Dx Imaging II (5 decks)

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