Medically reviewed by Oluseun Olufade, MD Most back of the knee pain, known as posterior knee pain, comes from an injury.

Symptoms include a swollen kneecap, pain when bending the knee, and nighttime knee pain. Bursitis is common in professions that require constant kneeling or squatting, particularly when protective ...

sudden swelling, bruising, locking of the knee, and an inability to walk. Infection Occasionally, the bursa — a fluid-filled sac in the knee that helps cushion your joint — might be infected.

Knee bursitis Where it hurts ... is sometimes possible to run through the pain as long as the knee is no longer swollen. Other treatment options for more severe cases include physical therapy ...