Spinal Anatomy Exam III Practice

Ferguson's angle is associated with which region of the spine?

Cervical Thoracic Lumbar Sacral

Correct Answer:

Lumbar

Explanation:

Ferguson's angle, often called the lumbosacral angle, describes the tilt at the junction where the lumbar spine meets the sacrum. It’s measured as the angle between a line along the superior endplate of the lowest lumbar vertebra (typically L5) and a horizontal reference, or variations of the same idea using the sacral base. This angle captures how much the lumbar spine curves forward (lumbar lordosis) and how the sacrum sits relative to the pelvis. Because the measurement centers on the orientation and curvature of the lumbar region as it transitions into the sacrum, it is a feature of the lumbar area. A larger angle reflects greater lumbar lordosis, linking it to the lumbar spine rather than the cervical, thoracic, or sacral regions alone.

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