|
Gout |
Feature |
Pseudogout |
|
Deposition of monosodium |
Cause |
Deposition of calcium |
|
1st Metatarsophalangeal joint (Podagra) |
Most common affected joint |
Knee joint (most common), |
|
• Needle-shaped crystals • Negatively birefringent |
Synovial fluid findings |
• Rhomboid-shaped crystals • Positively birefringent |
Figure- Chondrocalcinosis (Cartilage calcification)
• Most common cause of chondrocalcinosis is CPPD (eg. Pseudo gout).
CPPD- Calcium Pyro Phosphate Dihydrate crystal depositiont