Final

Question 1

What are the upper size limits for RPI and RTI?

Answer 1

7mm and 22mm

Question 2

What are some osteoporosis type changes noted involving the vertebrae?

Answer 2

bioconcave, wedge, and collapsed

Question 3

What is endobone?

Answer 3

bone in a bone

Question 4

What are the names for bone in a bone?

Answer 4

osteopetrosis, marble bone, and Albers-Schoenberg disease

Question 5

What color is normal bone marrow on T1?

Answer 5

white is right

Question 6

What findings suggest osteopenia?

Answer 6

decreased bone density, trabecular changes, washed out appearance, cortical thinning, and changes of vertebral shape

Question 7

What are some radiographic features of spinal osteoporosis?

Answer 7

decreased bone density, cortical thinning “pencil thin”, reabsorption of nonstress-bearing trabeculae, accentuated vertical struts, and altered vertebral shape

Question 8

What is the three column method criteria for mechanical stability of the vertebra?

Answer 8

fracture of column A or C is stable, fracture of column B or any two regions is unstable

Question 9

What is paintbrush metaphysis a sign of?

Answer 9

rickets

Question 10

What are some findings of osteoporosis in an extremity?

Answer 10

thinned cortices (pencil thin), endosteal scalloping, loss of the secondary trabeculae, risks of fractures

Question 11

Hyperparathyroidism related to renal disease could be called?

Answer 11

renal osteodystrophy

Question 12

What is Ward’s triangle?

Answer 12

accented trabeculation, causing a prominence of Ward’s triangle

Question 13

What is Ward’s triangle associated with?

Answer 13

osteoporosis

Question 14

What are the three trabeculation patterns?

Answer 14

primary compressive band, secondary compressive band, and primary tensile band

Question 15

What are mottled cystic density and flattened epiphysis associated with?

Answer 15

Legg-Calve Perthes disease

Question 16

What is Legg-Calve Perthes disease?

Answer 16

AVN of the femoral head in a child

Question 17

What is decreased anterior height associated with?

Answer 17

compression fracture

Question 18

What does a step defect mean?

Answer 18

new fracture

Question 19

What are the differential diagnosis for pathologic compression fractures?

Answer 19

multiple myeloma, osteoporosis, and lytic metastasis

Question 20

What is “rain drop skull” associated with?

Answer 20

multiple myeloma

Question 21

What is Sever’s disease?

Answer 21

a variant of ossification in the heel

Question 22

What could cause a resorption of the distal clavicle with widening of the AC joint?

Answer 22

HPT, inflammatory joint disease, post traumatic osteolysis, infection, and lytic mets

Question 23

What causes Rugger-Jersey spine?

Answer 23

HPT

Question 24

What are the radiolucent lines at a right angle to the parent bone called?

Answer 24

Looser Lines

Question 25

What is TOH?

Answer 25

transient osteoporosis of the hip

Question 26

What are subperiosteal resorption and salt and pepper skull a sign of?

Answer 26

HPT

Question 27

What are Looser lines associated with?

Answer 27

osteomalacia

Question 28

What are some radiographic features of acromegaly?

Answer 28

spade-like distal tufts, hooking osteophytes, increased joint spaces, widened shaft, and increased tissue thickness

Question 29

Healpad thickness greater than 23mm indicates:

Answer 29

acromegaly

Question 30

What is gigantism?

Answer 30

GH oversecretion occurs prior to skeletal maturation

Question 31

what is cleidocranial dysplasia?

Answer 31

absent clavicles