Clinical value of a novel V-shaped annular suture under unilateral biportal endoscopy: a retrospective comparative study with the traditional I-shaped suture.

Our clinical findings indicate that, compared with the conventional I-shaped suture, the V-shaped technique achieved comparable outcomes in pain relief and functional recovery, while demonstrating a favorable trend in patient satisfaction and recurrence rate.

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Although the difference did not reach statistical significance, theoretical analysis suggests that the V-shaped configuration improves defect closure and provides superior clinical stability.

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