| |
Osteoarthritis
- Joint space narrowing, sclerosis, osteophytosis (classic triad)
- Primary osteoarthritis: familial disease only; affects middle aged women in the DIP, PIP and basilar joints of the thumbs bilaterally
Rheumatoid Arthritis
- Soft-tissue swelling, osteoporosis, joiont space narrowing, marginal erosions
- Proximal perdominance
- Generally bilateral
Psoriatic Arthritis
- Proliferative erosions, soft-tissue swelling, periostitis
- Distal predominance
Benign Tumor:
1-No cortical destruction
2-Benign periostitis: thick wavy, uniform or dense = low-grade chronic irritation
3-Narrow zone of transition; can be traced with a pencil
Malignant Tumor:
1-Cortical destruction
2-Aggressive periostitis: lamellated (onion-skinned), amorphous, sunburst
3- Wide zone of transition; imperceptible
Permeative lesions
- (multiple small holes): not easily categorized as benign vs malignant:
- multiple myeloma, primary lymphoma of bone, Ewing's sarcoma
|
