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Modified Schober test in a woman with ankylosing spondylitis

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Modified Schober test in a woman with ankylosing spondylitis

The modified Schober test is used to quantify the flexibility of the lumbosacral spine. A mark is made at the lumbosacral junction. A second mark is made 10 cm above the first, and a third mark is made 5 cm below the first. The patient is instructed to lean forward, flexing the spine as much as comfortably possible. The distance between the second and third marks is measured and the difference between this distance and the starting 15 cm is compared to standardized norms adjusted for age and sex. (Contributed by Dr. Walter Carlini.)

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