Bayliss left posterior ilium

do this first, before other manips

raise distal 2 inches - mild BB of low back - this levers the sacral base posteriorly



support shins for knee flexion

side-shift right - makes left SIJ malleable

left asis floated on wedge braced against the left acetabulum and femoral head



operator on right of patient

operator hypothenar against medial PSIS

displace psis laterally toward contralateral side, thus gaping the posterior ilisacral joint

antero-superior push by operator, directed along the line of the iliac crest



this gives us a left posterior SIJ,

that can then be corrected by:

raised legs lever the iliac crest anteriorly

operator right hypothenar directed antero-inferior,

pushing the sacral base anteriorly into neutral