counternutation

count·er·nu·ta·tion

(kown'tĕr-nū-tā'shŭn)
Anterior rotation of the sacrum against the left and right ilia.
Compare: nutation
[counter- + nutation, fr. L. nuto, to nod]

counternutation,

n posterior movement of the sacrum around a transverse axis relative to the hip bones.
Mentioned in ?
References in periodicals archive ?
Counternutation represents sacral base movement posteroinferior in relation to the ilium [36,38], and is checked by the longitudinal fibers of the interosseous ligament [39].