Rocks are either classified as sedimentary, igneous or metamorphic, depending on the manner in which they were formed. Most rocks encountered in everyday life are sedimentary, although some igneous rocks, such as granite, are also common.
Neuromuscular scoliosis encompasses scoliosis that is secondary to neurological or muscular diseases. This includes scoliosis associated with cerebral palsy, spinal cord trauma, muscular dystrophy, spinal muscular atrophy and spina bifida.
Scoliosis is often categorized by the shape of the curve, usually as either structural or nonstructural. 1  Structural scoliosis: In addition to the spine curving from side to side, the vertebrae rotate, twisting the spine. 2  Nonstructural scoliosis: The curve does not twist but is a simple side-to-side curve.