Anserine bursa

Anserine bursa is a bursa located in the medial aspect of the knee. It is situated between the tibia and the tendons of the sartorius, gracilis, and semitendinosus muscles, also known as the pes anserinus. The term "anserine" is derived from the Latin word "anser", which means "goose". This is because the three-pronged lower attachment of the aforementioned muscles is said to resemble a goose's foot.

Anatomy

The anserine bursa is a small, fluid-filled sac that provides a cushion between the shinbone (tibia) and the tendons of the three muscles that make up the pes anserinus. These muscles are the sartorius, gracilis, and semitendinosus. The bursa helps to reduce friction and allow these tendons to glide smoothly over the shinbone during movement.

Function

The primary function of the anserine bursa is to reduce friction between the tibia and the tendons of the sartorius, gracilis, and semitendinosus muscles. This allows for smooth, unimpeded movement of the knee joint.

Clinical significance

Inflammation of the anserine bursa, known as anserine bursitis, can cause pain and swelling in the knee. This condition is most commonly seen in athletes, overweight individuals, and older adults with osteoarthritis. Treatment typically involves rest, ice, and nonsteroidal anti-inflammatory drugs (NSAIDs). In severe cases, corticosteroid injections or surgery may be necessary.

See also

• Bursa (anatomy)
• Pes anserinus
• Bursitis

References

Anserine bursa Resources
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