Cerebral Palsy

spastic quadriplegia at highest risk of scoliosis

surgery indicated for progressive deformity, sitting imbalance, pelvic obliquity

must fuse segmentally to pelvis due to pelvic obliquity

majority get ant/post fixation

The ability to sit by age 2 is highly prognostic of eventual walking ability (Wu YW, Pediatrics 2004;114:1264).