From which vertebral level does the lateral arcuate ligament extend from its transverse process to the 12th rib?

From which vertebral level does the lateral arcuate ligament extend from its transverse process to the 12th rib?

• A. From L1 TP to lower border of 12th rib
• B. From L2 TP to 12th rib
• C. From L1 TP to upper border of 12th rib
• D. From L2 TP to lower border of 12th rib

Answer: (A)

The lateral arcuate ligament is a fascial arch that thickens over the quadratus lumborum, extending from the transverse process of the first lumbar vertebra to the lower border of the twelfth rib. This makes the correct relation from L1 TP to the lower border of the 12th rib. It doesn’t originate from L2 or reach the rib’s upper border, which is why those options aren’t correct.

The lateral arcuate ligament is a fascial arch that thickens over the quadratus lumborum, extending from the transverse process of the first lumbar vertebra to the lower border of the twelfth rib. This makes the correct relation from L1 TP to the lower border of the 12th rib. It doesn’t originate from L2 or reach the rib’s upper border, which is why those options aren’t correct.