Osteoarthritis **LOSS -**irregular Bone remodelling:
- Loss of joint space
- Osteophyte formation (bony spurs protrude out)
- Sclerosis (underlying Bone becomes hard)
- Subchondrial cyst
Rheumatoid Arthritis LESS- immune reaction:
- Loss of joint space
- Erosions
- Soft tissue swelling
- Soft bones (osteopaenia)