Cobb Angle And Scoliosis
10 June 2021
The term “Cobb Angle” is used worldwide to measure and quantify the magnitude of spinal deformities, especially in the case of scoliosis. The Cobb angle measurement is the “gold standard” of scoliosis evaluation endorsed by Scoliosis Research Society. It is used as the standard measurement to quantify and track the progression of scoliosis. Cobb angle was first described in 1948 by Dr. John R Cobb where he outlined how to measure the angle of the spinal curve. Hence, the term “Cobb Angle” came about, bearing his name. The forward bending test is usually use to screen for scoliosis before puberty. An X-ray will be performed on the patient if this test is positive and the Cobb angle measured. How To Measure Cobb Angle?
- Locate the most tilted vertebra at the top of the curve and draw a parallel line to the superior vertebral end plate. [Insert picture showing vertebral endplates].
- Locate the most tilted vertebra at the bottom of the curve and draw a parallel line to the inferior vertebral end plate.
- Erect intersecting perpendicular lines from the two parallel lines.
- The angle formed between the two parallel lines is Cobb angle. [Insert pic to show measurement of cobb angle]