Usually by X-rays. The screening test for scoliosis is a forward bending test, where the patient bends forward at the waistband the examiner looks for a rotational deformity, or.
X-ray. A physical exam can raise the suspicion regarding whether or not a person has scoliosis, but an X-ray will confirm the diagnosis and determine the severity.
Scoliosis. Initially a spinal exam can sometimes diagnose scoliosis but ideally an xray of the spine will be the best diagnostic tool.