Which radiographic findings are consistent with osteoarthritis in the elbow of a companion animal?

Which radiographic findings are consistent with osteoarthritis in the elbow of a companion animal?

• A. Joint effusion only
• B. Soft tissue swelling
• C. Osteophytosis
• D. Osteophytosis, subchondral sclerosis, soft tissue swelling

Answer: (D)

Osteoarthritis in the elbow shows several characteristic radiographic changes reflecting cartilage loss and joint degeneration. The best-supported finding is a combination of osteophyte formation at the joint margins (osteophytosis), thickening of the subchondral bone (subchondral sclerosis) from abnormal load and remodeling, and soft tissue swelling from joint effusion and synovitis. Together, these changes create a radiographic pattern typical of OA. While joint effusion or soft tissue swelling can occur with many conditions, they are not by themselves diagnostic of OA; the presence of osteophytosis plus subchondral sclerosis along with soft tissue swelling best fits osteoarthritis in the elbow.

Osteoarthritis in the elbow shows several characteristic radiographic changes reflecting cartilage loss and joint degeneration. The best-supported finding is a combination of osteophyte formation at the joint margins (osteophytosis), thickening of the subchondral bone (subchondral sclerosis) from abnormal load and remodeling, and soft tissue swelling from joint effusion and synovitis. Together, these changes create a radiographic pattern typical of OA. While joint effusion or soft tissue swelling can occur with many conditions, they are not by themselves diagnostic of OA; the presence of osteophytosis plus subchondral sclerosis along with soft tissue swelling best fits osteoarthritis in the elbow.