Knee Bursitis Frustration Knee bursitis occurs when one or more of the bursae—small, fluid-filled sacs located near your knee joint—become inflamed. Four main synovial bursae surround your knee joint, helping to reduce friction and provide cushioning. These include: ✔️ Prepatellar bursa ✔️ Pes anserine bursa ✔️ Suprapatellar bursa ✔️ Infrapatellar bursa My first injury happened a few years ago when I fell off a bike, and since then, I’ve experienced chronic knee bursitis. If you’re going through