Iliolumbar ligament
(Redirected from Ligamentum iliolumbale)
Iliolumbar ligament is a significant ligament in the human body that connects the fifth lumbar vertebra to the ilium, or hip bone. It is part of the posterior ligamentous system, which provides stability to the lumbar spine.
Etymology[edit | edit source]
The term "iliolumbar" is derived from the Latin words "ilium," meaning hip bone, and "lumbus," meaning loin. Thus, "iliolumbar" refers to the connection between the hip bone and the lower back.
Anatomy[edit | edit source]
The iliolumbar ligament is a strong band of fibrous tissue that extends from the tip of the transverse process of the fifth lumbar vertebra to the posterior part of the inner lip of the iliac crest. It is divided into two parts: the vertical part, which attaches to the iliac crest, and the horizontal part, which attaches to the transverse process of the fifth lumbar vertebra.
Function[edit | edit source]
The primary function of the iliolumbar ligament is to prevent excessive movement at the lumbosacral junction, which is the point where the lumbar spine meets the sacrum. By limiting movement in this area, the iliolumbar ligament helps to stabilize the lower back and prevent injury.
Clinical significance[edit | edit source]
Injury or strain to the iliolumbar ligament can cause lower back pain, a condition known as iliolumbar syndrome. This condition is often caused by sudden twisting or bending movements, and is commonly seen in athletes. Treatment typically involves rest, physical therapy, and in some cases, surgery.
Related terms[edit | edit source]
- Ligament: A band of fibrous tissue that connects bones or cartilages, serving to support and strengthen joints.
- Vertebra: One of the bony or cartilaginous segments composing the spinal column.
- Ilium: The large broad bone forming the upper part of each half of the pelvis.
- Lumbosacral junction: The point where the lumbar spine meets the sacrum.
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