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Ultrasound shows that CSA-I is the most reliable measure for diagnosing carpal tunnel syndrome, suggesting it should be used in clinical practice.
CSA-I remains the most reliable sonographic parameter for diagnosing CTS in the general population. A CSA-I value >9.5 mm2 is recommended for routine clinical practice. Dynamic measures may retain value in specific subgroups but do not replace CSA-I for general CTS evaluation.
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Soleimani-Shishavan et al. (2026) studied this question.
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