Commentary evaluates smartphone compass utility for measuring cervical rotation in ankylosing spondylitis, highlighting key requirements for clinical translation.
I read with interest the article by Kenar Artin and colleagues evaluating the iPhone Compass application for measuring cervical rotation (CR) in ankylosing spondylitis (AS), compared with a digital...
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Bodhisatwa Choudhuri (2026) studied this question.
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