Study of Walk in Patients With Pelvic Fixation

Observational Prospective Comparative Study Before and After Spinal Surgery for Scoliosis With Pelvic Fixation in Patients

The purpose of this study is to determine the effect of double end spinal instrumentation from the upper thoracic to the pelvis with sacro-iliac fixation on the gait of ambulating patients with pelvic obliquity 6 month after surgery.

The pelvic fixations were used since many years for these patients. However there are no prospective study investigating the gait evolution before and after a surgical treatment by long spinal instrumentation with pelvic fixation.

Investigators are planning to analyze the gait, before and 6 months after surgery. Investigators will use 2 qualitative criterions with a gait analysis and a walking test, and 1 quantitative criterion with a questionnaire assessing the patient's functional change. Investigators will use as surgical treatment a long double end spinal fixation without fusion, investigators use an ilio sacral screw as pelvic anchor on each side.

Evaluation of changes in gait after pelvic fixation of a long spinal instrumentation will make it possible to extend or, on the contrary, restrict the indications for pelvic fixation surgery in walking patients, who are candidates for pelvic fixation.

Inclusion Criteria:

• Patient under 18 walking or strolling
• Patient with scoliosis requiring long instrumentation taking pelvis with iliosacral screws

Exclusion Criteria:

• Patient presenting a predictable pejorative evolution of the walk due to the pathology of the patient within 2 years
• Patient or parent who has notified their refusal to participate