RADIOLOGY OF OSTEOMYELITIS II

Question 1

this type of chronic osteomyelitis presents with the potential complications:

septic arthritis
pathologic fractures
increase or decrease in bony growth of younger patients
secondary malignancy 
death

Answer 1

chronic osteomyelitis

Question 2

what are the radiographic indications for chronic osteomyelitis?

Answer 2

reactive medullary sclerosis

significant periostitis around cancellous bone

Brodies abscess

fractures

subluxation of joints

Question 3

periostitis around cancellous bone presents with?

Answer 3

involucrum
sequestrum
cloaca

Question 4

what is this presentation of periostitis?

florid periosteal new bone formation (thick solid rxn)

Answer 4

involucrum

Question 5

what is this presentation of periostitis?

one or more pieces of bone that have been segmented off and are floating around. the bone is avascular and becomes radio dense

Answer 5

sequestrum

Question 6

small or large defect in the involucrum

Answer 6

cloaca

Question 7

a bony abscess generally of hematogenous origin

chronic, subacute osteomyelitis process

Answer 7

Brodies abscess

Question 8

sites affected by Brodies abscess?

Answer 8

distal tibia is most common

Question 9

how does Brodies abscess present?

DDx?

Answer 9

geographic lysis
-1D lesion

osteoid osteoma
osteoblastoma

Question 10

chronic, low grade, diffuse, non purulent form of OM usually due to improper therapy where the bug wasn’t eradicated and left with a smoldering OM infection that progresses

minimal to absent bone destruction

no sequestrum

Answer 10

chronic sclerosing osteomyelitis