Pelvic Obliquity
Pronunciation: PEL-vik ob-LIK-wi-tee
A lateral tilting of the pelvis in the frontal plane, which may be fixed or flexible, significantly affecting seating prescription and postural support requirements.
Full Definition
Pelvic obliquity refers to an asymmetrical elevation or depression of one side of the pelvis relative to the other when viewed from the front, creating a tilted baseline for spinal and trunk posture. In rehabilitation seating, distinguishing between a flexible obliquity (correctable with positioning) and a fixed obliquity (requiring accommodation) is critical to selecting appropriate cushion and backrest configurations. Editors reviewing seating assessment documentation must ensure the terms 'flexible' and 'fixed' are applied accurately and consistently alongside 'pelvic obliquity.' The condition is also a key indicator in mat evaluation findings. Misspelling as 'pelvic oblicity' or 'pelvic obliqity' is a noted proofreading trap.
Usage
Usage note: Do not confuse with pelvic tilt (anterior/posterior) or pelvic rotation (transverse plane); these are anatomically distinct postural deviations.
In Context
- "A fixed pelvic obliquity of 15 degrees was noted during the mat evaluation, necessitating a laterally wedged seat cushion." — Seating assessment report
- "Distinguish 'pelvic obliquity' (lateral tilt) from 'pelvic tilt' (anterior/posterior) and 'pelvic rotation' (transverse plane) in all documentation." — Editorial accuracy note