Prepatellar bursa

Prepatellar bursa

Prepatellar bursa

The prepatellar bursa is a small fluid-filled sac located in front of the patella (kneecap). It serves as a cushion between the patella and the overlying skin, reducing friction and allowing smooth movement of the knee joint. The prepatellar bursa is one of several bursae found in the knee joint.

Anatomy

The prepatellar bursa is situated superficially, just beneath the skin and in front of the patella. It is a thin-walled sac filled with synovial fluid, which helps to reduce friction between the patella and the skin during activities such as kneeling.

Function

The primary function of the prepatellar bursa is to facilitate movement and reduce friction between the patella and the skin. This is particularly important during activities that involve frequent kneeling or pressure on the knee, such as gardening, cleaning, or certain sports.

Clinical Significance

Prepatellar Bursitis

One of the most common conditions affecting the prepatellar bursa is prepatellar bursitis. This condition, also known as "housemaid's knee," occurs when the bursa becomes inflamed due to repetitive trauma, prolonged pressure, or infection. Symptoms of prepatellar bursitis include swelling, pain, and tenderness in the area over the patella. Treatment typically involves rest, ice, compression, and elevation (RICE), as well as anti-inflammatory medications. In severe cases, aspiration of the bursa or surgical intervention may be necessary.

Infection

Infection of the prepatellar bursa, known as septic bursitis, can occur due to a break in the skin or an underlying infection. This condition requires prompt medical attention and is typically treated with antibiotics and drainage of the infected fluid.

Related Conditions

• Patellar tendinitis
• Knee osteoarthritis
• Meniscus tear
• Anterior cruciate ligament injury

See Also

• Bursa (anatomy)
• Knee joint
• Synovial fluid
• Patella