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Boards Part 4 xray
Question | Answer |
---|---|
Pars fracture in lumbar spine. What part of "scotty dog" is fractured? | Neck |
Shenton's line indicative of? | femoral neck fracture, hip dislocation, slipped femoral capital epiphysis |
Associated with Down's syndrome | increased ADI space, absent transverse ligament |
RA | fusion of apophyseal joints, deformed spinous processes, decreased anterior to posterior diameter of the vertebral body |
Klippel-feil | low hairline, decreased range of cervical motion and short, webbed neck |
ossiculum terminale persistens of Bergman | failure of fusion of the apical secondary ossification center at the odontoid tip. visible as a "V" shape in pt over 12. |
os odontoideum | top of odontoid develops notmally but fails to unite. visualized as a well defined, smooth, radiolucency |
enchondromatosis | Enchondromatosis is a form of osteochondrodysplasia characterized by a proliferation of enchondromas. An Enchondroma is a cartilage cyst found in the bone marrow. Typically, enchondroma is discovered on a X-ray scan |
osteosarcoma | malignant bone lesion, cumulus cloud in appearance and effects predominately males btw 10-25 |
bone island | thorn-like radiating spicules |
differentials for bone island | osteoma and osteoblastic metastasis |
enostoma, likely dx | bone island |
2 common locations for an enostoma to occur | ilium and proximal femur |
bone islands are not likely in the... | skull |
osteoid osteoma | Radiographs in osteoid osteoma typically show a round lucency, the nidus, surrounded by sclerotic bone. |
most common places for osteoid osteomas | femur and tibia |
most common stucture in the spine for osteoid osteoma to occur | lamina |
differential of osteoid osteoma | Brodie's abscess |
Brodie's abscess | subacute osteomyelitis, which may persist for years before converting to a frank osteomyelitis |