At what vertebral level is the iliac crest found?

• A. L2
• B. L3
• C. L4
• D. L5

Answer: (C)

The iliac crest, which is the superior border of the ilium, is generally located at the level of the fourth lumbar vertebra (L4). This anatomical landmark is significant in clinical practice, particularly when performing procedures such as lumbar punctures or administering epidural injections, as it helps to identify the appropriate intervertebral spaces.

At the L4 level, the iliac crest provides a palpable reference point for healthcare professionals. This is important to ensure accuracy and safety during interventions in this region of the spine. Understanding the relationship between the iliac crest and the lumbar vertebrae is crucial for imaging studies as well, as it assists in correctly positioning patients and interpreting radiographic images.