DR P. MARAZZI / SCIENCE PHOTO LIBRARY DR P. MARAZZI / SCIENCE PHOTO LIBRARY
Bursitis of the knee of an adult male patient who was kneeling doing decorating, here affecting the infrapatellar space of the kneecap, also known as Clergyman's knee. Bursitis is the inflammation of a bursa, a fluid-filled pad that lubricates a region where muscles and tendons slide over bone. It occurs through prolonged pressure or repetitive movements and the knee can be affected by kneeling for long periods.
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