الفهرس 
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Abstract
surgical treatment for adolescent idiopathic scoliosis is indicated, in general,
for a curve exceeding 45 or 50 degrees by the Cobb’s method on the ground
that curves larger than 50 degrees progress even after skeletal maturity.
Thoracic curves with magnitude between 50 and 75 degrees at skeletal maturity
(Risser IV or V) progressed of an average of 29.4 degrees over the 40.5 years
follow-up period (165).
Posterior fusion with instrumentation has been a standard of the surgical
treatment for scoliosis since first introduced by Paul Harrington (64). In his
system, correction force was applied with distraction along the concavity of the
curve. In the second generation instrumentation system developed by Cotrel and
Dubousset (32), correction was attempted by the rod-rotation maneuver. In modem
instrumentation systems, more anchors are used to connect the rod and the spine,
resulting in better correction and less frequent implant failures (143). Segmental
pedicle screw constructs or hybrid constructs using pedicle screws, hooks, and
wires are the trend of today. We conducted this study, to assess the clinical and
radiological outcome of the surgical treatment for adolescent idiopathic scoliosis
using posterior instrumentation with fusion.
Forty eight patients were followed, from the time being diagnosed to have a
surgical adolescent idiopathic scoliosis, passing with the operation, and all the
outpatient post-operative follow-up.
All the pre & post-operative radiological images were recorded, clinical
data, and outcome was assessed using SRS-22 questionnaire. Accurate arithmetic
calculations were done to determine the differences between pre & post-operative
curves. Curves were classified according to Linke classification system. All the
data were statistically quantified and analyzed.
Mean age of the patients at time of surgery was 14. 7± 1.8 years, 43 of them
were females (89.6%), while only 5 (10.4%) were males.