Which pelvic feature should be palpated to assess elevation or rotation?

Palpating the PSIS (Posterior Superior Iliac Spine) is essential for assessing pelvic elevation or rotation because this bony prominence provides a clear landmark for observing asymmetry in the pelvis. When one PSIS is higher than the other, it can indicate elevation on that side, while a rotation can be noted based on the relative position of the PSIS in relation to the sacrum and the other PSIS.

The PSIS is part of the pelvic structure that can shift with changes in posture or movement, making it a key point for assessing alignment and function during a postural analysis. This allows for a better understanding of how the pelvis affects overall body mechanics. Other pelvic features, while significant in a postural assessment, do not provide the same direct indication of elevation or rotation as the PSIS does. For example, the iliac crest might give some indication of height but does not specifically reflect rotational changes. The pubic symphysis is centrally located and primarily assesses anterior-posterior alignment, not the lateral shifts of the pelvis. The sacroiliac joint’s evaluation typically focuses on overall joint function rather than specific positioning regarding elevation or rotation.