Sittbensknölarna

Sittbensknölarna, also known as ischial tuberosities or sit bones, are two bony prominences located at the bottom of the pelvis. They are part of the pelvic bone and serve as the primary weight-bearing points when a person is sitting. These structures are covered by a thick layer of fat and muscle, which cushions them and allows for comfortable sitting on various surfaces.

The size and prominence of the sittbensknölarna can vary between individuals. They play a crucial role in posture and stability while seated. During activities like cycling or horseback riding, the pressure on the sittbensknölarna can be significant, leading to discomfort or pain for some individuals.

Certain medical conditions can affect the sittbensknölarna. Inflammation, known as ischial bursitis, can occur when the bursa sac covering the tuberosity becomes irritated or inflamed, often due to prolonged sitting or direct trauma. This condition can cause pain and tenderness in the area. In some cases, fractures of the ischial tuberosities can occur, though this is typically associated with severe trauma. Understanding the anatomy and function of the sittbensknölarna is important for addressing issues related to sitting comfort and pelvic health.