From the back, which point should be used to assess the position of the sacrum and tailbone?

• A. Center of Skull
• B. Center of Sacrum and Tailbone
• C. Center of Gluteal Fold
• D. Ears Level

Answer: (B)

When assessing sacral position from the back, you use the center of the sacrum and tailbone as the reference point. This midline anchor on the posterior pelvis lets you evaluate sacral tilt, rotation, and overall pelvis levelness by observing how the sacrum and coccyx align relative to the rest of the spine. Landmarks like the center of the skull or ears relate to head position, while the gluteal fold is not a reliable reference for assessing sacral alignment. Using the center of the sacrum and tailbone provides a consistent, pelvis-focused point of reference for accurate assessment.