A limitation of this study is the lack of radiographs of
the spinal curves defined as scoliosis. Structural scoliosis
are rare at GMFCS level I and flexible spinal curves of
postural origin are found to be more frequently rated as
scoliosis at clinical examination than at radiographs.25
Since no radiographs of the spine were available, we chose
to include all spinal curves rated as mild, moderate, or
severe by the local physiotherapist and individuals operated
with spinal fusion. This is likely to give a higher frequency
of scoliosis compared to other studies with different definitions
of scoliosis.