A 31-year-old woman has complains of pain and swelling in her radiocarpal and metacarpophalangeal joints and morning stiffness for up to 1.5 hours. These signs have been observed for the last 3 years. Two weeks ago she developed pain, swelling, and redness in her knee joints and fever of 37.5°C. The examination of her internal organs shows no pathological changes. She was diagnosed with rheumatoid arthritis. What changes will most likely be visible on the X-ray scan of her joints?