Question

1. describe the differences in both case presentation and radiographic findings in a patient with inflammatory arthritis and osteoarthritis.
2. inflammatory arthritis:
3. joint space narrowing: bilateral and symmetric uniform loss of joint space
4. bone changes: marginal erosions, periarticular osteopenia, sclerosis
5. soft tissue: swelling from synovitis
6. deformities: subluxations and characteristic patterns (ulnar deviation, swan - neck deformity, boutonniere)
7. osteoarthritis:
8. joint space narrowing: asymmetrical, often focal
9. bone changes: osteophyte formation, subchondral sclerosis and cysts
10. soft tissue: usually no swelling
11. deformities: bone enlargements at dip (heberden’s nodes) and pip (bouchard’s nodes)

Explanation:

Inflammatory arthritis shows bilateral and symmetric joint - space loss, marginal erosions, synovitis - related swelling, and characteristic deformities. Osteoarthritis has asymmetric focal joint - space narrowing, osteophyte formation, usually no soft - tissue swelling, and specific bone enlargements at DIP and PIP.

Answer:

Inflammatory arthritis:

1. Joint space narrowing: Bilateral and symmetric uniform loss of joint space
2. Bone changes: Marginal erosions, periarticular osteopenia, sclerosis
3. Soft tissue: Swelling from synovitis
4. Deformities: Subluxations and characteristic patterns (Ulnar deviation, swan - neck deformity, boutonnière)

Osteoarthritis:

1. Joint space narrowing: Asymmetrical, often focal
2. Bone changes: Osteophyte formation, subchondral sclerosis and cysts
3. Soft tissue: Usually no swelling
4. Deformities: bone enlargements at DIP (Heberden's nodes) and PIP (Bouchard's nodes)