Ring and long digit radiograph in a patient with psoriatic arthritis. There is loss of the tuft to the ring finger (arrow), so called acroosteolysis. The long finger shows soft tissue swelling (asterisk) with severe joint space loss and erosions at the proximal...
Right foot radiograph in a patient with psoriatic arthritis. There is pencil-in-cup deformity involving the proximal interphalangeal (PIP) joint to the third toe (arrow). (Courtesy of Dr. A. Donovan)
Left long finger radiograph in a patient with psoriatic arthritis and dactylitis. Note soft tissue swelling at the proximal interphalangeal (PIP) joint. Arrows show proliferative new bone formation. There is moderate joint space loss at the PIP joint. (Courtesy of Dr....
Left hand radiograph in a patient with rheumatoid arthritis shows extensive erosions at the distal radius, ulna, and carpus. Erosive changes are also seen at metacarpophalangeal (MCP) and proximal interphalangeal (PIP) joints. (Courtesy of Dr. A. Donovan)
Right hand radiograph in a patient with advanced rheumatoid arthritis with erosions of the distal radius and ulnar styloid, as well as severe joint space loss with erosions throughout the carpus with soft tissue swelling. (Courtesy of Dr. A. Donovan)
