Gloria tried to remember the medical term for it: it was something to do with a lordosis.
By thus converting a posterior into an anterior dislocation, the tilting of the pelvis and the lordosis are greatly diminished.
curvature of the spine, 1704, Modern Latin, from Greek lordosis, from lordos "bent backwards." Related: Lordotic.
lordosis lor·do·sis (lôr-dō'sĭs)
An abnormal forward curvature of the spine in the lumbar region. Also called hollow back, saddle back.