Unformatted text preview: what joints?
Knee. Hip. Elbow.
What occurs in tumefactive synovialpacked in a joint. May look like tumor at MR.
Loose bodies are tightly chondromatosis?
PVNS looks radiographically identical to
Noncalcified synovial osteochondromatosis, yet much less common.
Sudenck atrophy is also known as Reflex sympathetic dystrophy.
Sudeck atrophy radiographic findings
Severe, patchy osteoporosis and soft tissue swelling. Typically affects hands or feet.
Radiographic sign or more displacement of suprapetallar fat pad and anterior femoral fat pad.
10 mm for a knee effusion
Signs of avascular necrosis?
Joint effusion. Patchy or mottled density. Subchondral lucency. Collapse of articular surface. Joint fragmentation. Only one side of joint involved.
Avascular necrosis of lunate?
Flattening and sclerosis of tarsal navicular thought to be due to avascular necrosis in children?
Form of AVN that is smaller and more focal is known as?
Common sites of osteochondritis dessicans? of talus. Capitellum.
Medial epicondyle of knee. Dome
Avascular necrosis of apophyseal rings of vertebral bodies is called
Avascular necrosis of metatarsal heads is called?
Avascular necrosis of femoral head?
Avascular necrosis of tibial tubercle is?
Osteoporosis versus osteomalacia? bone quantity. Osteomalacia: Abnormally mineralized (normal quantity) bone.
Normal metacarpal cortical thickening should be approximately ____________ the thickness of the metacarpal
One fourth to one third.
Distinguishes permeative processes from pseudopermeative processes?
Permeative process: Solid cortex with permeative medullary space. Pseudopermeative process: Cortex is permeative (multiple small holes).
Differential Aggressive osteoporosis. Hemangioma. Radiation changes.
diagnosis of pseudopermeative lesion?
Only finding ooser fracture: Fracture through large osteoid seams. Occur in femur, pelvis, and scapula.
L that is pathognomonic for osteomalacia
In children, Flared and irregular epiphyses. Findings
osteomalacia is called rickets. Long bones may bend.
Pathognomonic for hyperparathyroidism? Most commonly involves radial aspect of middle phalanges of hand.
Subperiosteal bone resorption.
Rugger jersey spine
Spine endplate osteosclerosis resembles stripes on rugby jerseys.
Few skeletal changes occur in hypoparathyroidism, but the following may be seen:
Calvaria may thickened. Basal ganglia calcification.
Failure of tissues to respond to PTH. Obesity, round facies, short stature, brachydactyly.
Acromegaly radiographic findings
View Full Document
- Winter '14
- Radiology, Soft Tissue, Avascular necrosis, Giant cell tumor, Solitary bone cyst