Abstract
The patients were reviewed with the aim of determining whether extending the fusion to the sacrum was needed or would affect the pelvic obliquity over the long term.
Twenty-four patients with quadriplegic cerebral palsy, (non-ambulators) aged between 5–23 who underwent corrective surgery for their scoliosis were included in the study
Twelve patients were stabilized to the sacrum (LUQUE-Galveston technique) and 12 to L4 or L5 in the lumbar spine using pedicle screws. The patients were divided into two groups. Group 1 Pelvic obliquity less than 20° – no stabilisation to the pelvis. Group 2 Pelvic obliquity more than 20° – stabilisation to the pelvis.
Group 1 – Patients with pre-operative pelvic obliquity less than 20° maintained their pre-operative pelvic obliquity without significant deterioration (less than 6° change). Group 2 – Patients with pelvic obliquity of 20° or more stabilised to the sacrum maintained or improved their correction until fusion. One patient had a draining sinus six months after the index operation for which removal of metalware (after fusion) was needed. No patient had a non union of the fusion mass.
We believe that patients with a pelvic obliquity of less than 20 degrees at the time of surgery don’t need stabilization to the pelvis. Lumbar pedicle screws give sufficient stability to the distal construct and preserve mobility at the lumbosacral junction. Operative times and blood loss were reduced in those patients not fixed to the pelvis. There appears to be no significant loss of correction of the pelvis obliquity over time.
The abstracts were prepared by Editorial Secretary Jean-Claude Theis. Correspondence should be addressed to NZOA at Department of Orthopaedic Surgery, Dunedin Hospital, Private Bag 1921, Dunedin, New Zealand.
