What Is a Cobb Angle?
Cobb Angle is a radiographic measurement used to describe the side-to-side curvature of the spine. Clinicians calculate it from selected vertebrae on a spinal image. The measurement helps identify the presence and severity of scoliosis, track changes over time, and support decisions about examination, monitoring, or treatment planning.
Quick Facts About Cobb Angle
Category
Radiographic measurement
Used for
Describing spinal curvature
Common confusion
Not a posture score
Also called
Cobb Measurement, Cobb angle measurement
Often discussed with
Scoliosis Treatment
Key Takeaways About Cobb Angle
- It comes from spinal imaging, not a posture photograph.
- Clinicians use it to describe and monitor spinal curvature.
- Cobb Angle does not identify the cause of a curve.
How Cobb Angle Works
Cobb Angle is determined from a standing or other appropriate spinal image by selecting the vertebrae that mark the upper and lower ends of a curve. Lines based on those vertebrae create an angle that represents the curve's size. The method focuses on the structure shown in the image, so positioning and image quality can affect the reading.
Related glossary terms: Posture Assessment, Neurological Exam, Range Of Motion.
A clinician may compare measurements from different images to observe whether a scoliosis curve appears stable or has changed. The measurement describes the curve, but it does not explain its cause or show how a person feels. A complete assessment also considers symptoms, physical findings, growth status, and the available imaging record. A spinal curvature measurement therefore supports clinical reasoning without replacing an examination.
From the Arrowhead Clinic Chiropractic - Albany team
When we review Cobb Angle information, we consider the imaging report alongside posture, movement, symptoms, and examination findings. Our team uses the measurement as one part of scoliosis care planning, not as a stand-alone description of a person’s health.
Cobb Angle in Practice: A Real-World Example
A person receiving scoliosis treatment brings a spinal imaging report that lists a Cobb Angle for a thoracic curve. The care team reviews that finding with the person’s posture and examination results when discussing the next step.
Related Services
Related Terms
Posture Assessment
A posture assessment is a structured review of how you hold your head, neck, shoulders, spine…
Neurological Exam
A neurological exam is a clinical assessment of the nervous system. It checks functions such as…
Range Of Motion
Range Of Motion is the amount and direction a joint can move through its available movement…
Arrowhead Clinic Chiropractic - Albany
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