In disc herniation, centralization of symptoms with repeated movements indicates what prognosis with mechanical therapy?

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Centralization with repeated movements signals discogenic pain that responds to mechanical loading. When movements are repeated, symptoms shift toward the center and away from the leg, indicating the nerve irritation is being relieved by the mechanical change in the spine—often extension reduces posterior disc protrusion and frees the nerve. This pattern shows a favorable response to mechanical therapy, so the prognosis is better for disc-related pain. In contrast, muscular strain doesn’t reliably centralize with this approach, systemic infection would bring systemic signs, and a neurological deficit that truly requires surgery suggests a different, more urgent course rather than a positive mechanical response.