?:definition
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1. A physiologic function occurring in the sacrum during ambulation and forward bending. 2. A sacral somatic dysfunction around an oblique axis in which a torque occurs between the sacrum and innominates. The L5 vertebra rotates in the opposite direction of the sacrum. 3. If the L5 does not rotate opposite to the sacrum, L5 is termed maladapted.4. Other terms for this maladaption include: rotations about an oblique axis, anterior or posterior sacrum and a torsion with a non-compensated L5 (Archaic use).
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