Pes anserine bursitis presents with which finding?

Pes anserine bursitis presents with which finding?

• A. Lateral knee pain with collateral swelling
• B. Pain behind the knee with posterior tenderness
• C. Pain in the inner knee with swelling and difficulty climbing stairs
• D. Pain at the patellar tendon without swelling

Answer: (C)

Pain on the medial side of the knee with swelling is the hallmark of pes anserine bursitis. The pes anserinus region sits on the medial proximal tibia where the tendons of the gracilis, sartorius, and semitendinosus insert, lying over the bursa beneath them. Inflammation of this bursa causes focal tenderness just below the inner knee joint line and pain that is worsened by activities that load the medial knee, especially climbing stairs or rising from a chair. This condition is often related to overuse, obesity, knee osteoarthritis, or valgus knee alignment, and it’s common in runners or individuals with increased medial knee stress. The other patterns point to different problems—lateral knee pain suggests IT band or lateral structures, posterior knee pain points to a Baker cyst or hamstring issues, and anterior knee pain with patellar tendon tenderness suggests patellar tendinopathy—so the medial knee pain with swelling and stair-climbing difficulty best fits pes anserine bursitis.

Pain on the medial side of the knee with swelling is the hallmark of pes anserine bursitis. The pes anserinus region sits on the medial proximal tibia where the tendons of the gracilis, sartorius, and semitendinosus insert, lying over the bursa beneath them. Inflammation of this bursa causes focal tenderness just below the inner knee joint line and pain that is worsened by activities that load the medial knee, especially climbing stairs or rising from a chair. This condition is often related to overuse, obesity, knee osteoarthritis, or valgus knee alignment, and it’s common in runners or individuals with increased medial knee stress. The other patterns point to different problems—lateral knee pain suggests IT band or lateral structures, posterior knee pain points to a Baker cyst or hamstring issues, and anterior knee pain with patellar tendon tenderness suggests patellar tendinopathy—so the medial knee pain with swelling and stair-climbing difficulty best fits pes anserine bursitis.