Dy. Lee et al., FIXED PELVIC OBLIQUITY AFTER POLIOMYELITIS - CLASSIFICATION AND MANAGEMENT, Journal of bone and joint surgery. British volume, 79B(2), 1997, pp. 190-196
We classified fixed pelvic obliquity in patients after poliomyelitis i
nto two major types according to the level of the pelvis relative to t
he short leg. Each type was then divided into four subtypes according
to the direction and severity of the scoliosis. In 46 patients with ty
pe-I deformity the pelvis was lower and in nine with type II it was hi
gher on the short-leg side, Subtype-A deformity was a straight spine w
ith a compensatory angulation at the lower lumbar level, mainly at L4-
L5, subtype B was a mild scoliosis with the convexity to the short-leg
side, subtype C was a mild scoliosis with the convexity opposite the
short-leg side, and subtype D was a moderate to severe paralytic scoli
osis with the convexity to the short-leg side in type I and to the opp
osite side in type TI. A combination of surgical procedures improved t
he obliquity in most patients, These included lumbodorsal fasciotomy,
abductor fasciotomy and stabilisation of the hip by triple innominate
osteotomy with or without transiliac lengthening, In patients with typ
e ID or type IID appropriate spinal fusion was usually necessary.