A modification of the Salter innominate osteotomy for hip dysplasia was
developed. A posterior triangular area is removed from the proximal side of
the osteotomy site to allow engagement of the distal iliac segment after
displacement of the osteotomized bone. This leads to increased stability
and prevents the medial and posterior displacement that occasionally is
seen after a Salter osteotomy. Also, with this modification the added limb
length seen with the Salter osteotomy is eliminated. Early experience shows
that this modification has produced excellent results in patients with
unilateral dysplasia and limb-length discrepancy in which the ipsilateral
limb is the longer extremity.