Lyme arthritis most commonly involves which joint?

Lyme arthritis most commonly involves which joint?

• A. Knee
• B. Elbow
• C. Shoulder
• D. Ankle

Answer: (A)

Lyme arthritis most often presents as inflammation of a single large joint, with the knee being the most frequently involved. The knee’s large synovial surface and heavy use make it particularly susceptible to inflammatory synovitis caused by Borrelia burgdorferi infection. While other joints like the elbow, shoulder, or ankle can be affected, they are less commonly involved than the knee. So, among the given options, the knee is the best choice.

Lyme arthritis most often presents as inflammation of a single large joint, with the knee being the most frequently involved. The knee’s large synovial surface and heavy use make it particularly susceptible to inflammatory synovitis caused by Borrelia burgdorferi infection. While other joints like the elbow, shoulder, or ankle can be affected, they are less commonly involved than the knee. So, among the given options, the knee is the best choice.