Prepatellar bursa

Prepatellar bursa
Sagittal section of right knee-joint, thus showing only frontal bursae. Area of prepatellar bursa marked
Details
Latin	Bursa praepatellaris
Anatomical terminology []

The prepatellar bursa is a frontal bursa of the knee joint. It is a superficial bursa with a thin synovial lining located between the skin and the patella.

Prepatellar bursitis, also known as housemaid's knee, is a common cause of swelling and pain above the patella (kneecap), and is due to inflammation of the prepatellar bursa. It is common in people who frequently kneel, such as roofers, plumbers, carpet layers, and gardeners. It is also common in wrestlers due to the repeated impact on the knee when shooting.

Symptoms include knee pain, swelling, redness and inability to flex the knee on the affected side. Rest usually relieves symptoms. Physical exam reveals erythema, tenderness to touch, fluctuant edema over the lower pole of the patella and crepitus.