What Is Cobb Angle?
Cobb Angle is a radiographic measurement used to describe the sideways curvature of the spine. A clinician calculates the angle between selected vertebrae on a spinal image. The result helps characterize scoliosis, track changes over time, and support treatment planning. Cobb Angle describes spinal alignment, but it does not measure pain, strength, or daily function.
Quick Facts About Cobb Angle
Category
Radiographic spinal measurement
Used for
Describing scoliosis curvature
Common confusion
Not a pain or function score
Also called
Cobb Measurement, Cobb angle measurement
Often discussed with
Scoliosis Treatment
Key Takeaways About Cobb Angle
- Cobb Angle comes from spinal imaging, not a posture observation alone.
- The measurement helps track scoliosis across evaluations.
- Cobb Angle does not directly measure pain or physical ability.
How Cobb Angle Works
Cobb Angle is measured from a spinal image by identifying the vertebrae that define the upper and lower ends of a curve. Lines follow the endplates of those vertebrae, and the angle between the lines represents the curve measurement. The selected vertebrae must match across follow-up images for a useful comparison.
Related glossary terms: Kyphosis, Lordosis, Range Of Motion.
Scoliosis may involve one or more spinal curves, so the image may show more than one measurement. A larger angle describes a more pronounced curve, but the number does not explain every feature of a person's condition. Clinicians interpret the result with posture findings, movement, growth status, symptoms, and changes seen over time. Vertebrae that appear rotated or uneven can also affect how the curve is understood.
From the Arrowhead Clinic Chiropractor Garden City team
When we discuss scoliosis treatment, we review Cobb Angle findings from available imaging to understand spinal curvature. We pair that information with posture, movement, and symptom findings. Our team treats the measurement as one part of clinical planning, not a stand-alone description of a person's function.
Cobb Angle in Practice: A Real-World Example
A person seeking scoliosis treatment brings a spinal image showing a curved section in the mid-back. The care team reviews the Cobb Angle alongside posture and movement findings to guide the clinical discussion.
Related Services
Related Terms
Kyphosis
Kyphosis is an outward curve of the upper spine that gives the back a rounded appearance…
Lordosis
Lordosis is an inward curve of the spine, most noticeable in the neck and lower back…
Range Of Motion
Range Of Motion is the amount and direction a joint can move through during an activity…
Arrowhead Clinic Chiropractor Garden City
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