Which description correctly differentiates neurodynamic signs?

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Neurodynamic signs describe the response of neural tissue to mechanical loading during neurodynamic testing. When a nerve is gently lengthened and allowed to glide with limb or spine movements, you look for symptoms that are reproducible and follow the course of a specific nerve. These signs often include pain, numbness, or tingling that changes with position or with maneuvers that increase or decrease neural tension, and they indicate neural tissue sensitivity rather than just local tissue involvement.

This concept is distinct from muscle palpation signs, which arise from tenderness or trigger points in muscles themselves; from pain provocation signs in a broader sense, which can involve many tissues but aren’t specific to neural tissue; and from vertebral signs, which reflect issues with the spine’s joints or discs rather than the neural tissue being stressed. The defining idea is neural tissue responsiveness to tension and its nerve-distribution–consistent symptoms.