Question

Which of the following statements is not true about iliolumbar ligament ?

• A. Upper fibres attached to iliac crest
• B. Lower fibres attached to base of sacrum
• C. Help in maintaining lumbosacral joint stability
• D. Upper attachment to transverse process of T₁₂

Answer 1

The Correct Option is D

The iliolumbar ligament plays a significant role in providing stability to the lumbosacral joint. To determine which statement is not true, let's examine the iliolumbar ligament's anatomical features:

• Upper fibres attached to iliac crest: The iliolumbar ligament originates from the transverse process of the L5 vertebra and attaches to the iliac crest, particularly involving the upper fibres.
• Lower fibres attached to base of sacrum: Although the primary attachment is to the iliac crest, some fibres may extend towards the sacrum, aiding in stabilizing the area.
• Help in maintaining lumbosacral joint stability: The ligament stabilizes the connection between the lumbar spine and the pelvis, crucial for maintaining lumbosacral joint stability.
• Upper attachment to transverse process of T₁₂: This statement is incorrect. The iliolumbar ligament does not attach to the transverse process of T₁₂; its attachment is to the L5 vertebra.

Therefore, the statement "Upper attachment to transverse process of T₁₂" is not true regarding the iliolumbar ligament.