Final answer:
The Cobb angle is used to measure scoliosis severity, and a Cobb angle above 20 degrees is usually considered clinically significant and may warrant treatment. Option 2 is correct.
Step-by-step explanation:
Above what angle is scoliosis Cobb angle considered significant? The Cobb angle is a method of measuring the degree of lateral curvature in the spine. When it comes to scoliosis, an abnormal lateral bending of the vertebral column, the Cobb angle is particularly significant for diagnosis and treatment.
A Cobb angle of 10 degrees is considered the minimum angle to define scoliosis, but it is a Cobb angle above 20 degrees that is often considered clinically significant and may require treatment.
Scoliosis can lead to complications, especially if it worsens during the adolescent growth spurts.
It is most commonly measured on an X-ray by drawing lines perpendicular to the endplates of the most tilted vertebrae at the top and bottom of the curve, and then measuring the angle where these lines intersect. Treatment options vary depending on the severity of the curve and may include observation, bracing, or surgery in extreme cases.