There are several types of inflammation that can cause knee pain, including sprains, bursitis, and injuries to the meniscus.[1] A diagnosis of prepatellar bursitis can be made based on a physical examination and the presence of risk factors in the person's medical history; swelling and tenderness at the front of the knee, combined with a profession that requires frequent kneeling, suggest prepatellar bursitis.[2] Swelling of multiple joints along with restricted range of motion may indicate arthritis instead.[3]:p.