The goal of this clinical trial is to evaluate the effectiveness of virtual reality-assisted physical therapy in the acute postoperative period after lumbar disc surgery. The main questions it aims to answer are: * Does virtual reality-assisted physical therapy reduce pain more effectively than conventional physical therapy? * Does it improve functional recovery, pain threshold, and blood biomediator levels? * Does it reduce anxiety and kinesiophobia in the early rehabilitation period? Researchers will compare virtual reality-assisted physical therapy with standard physical therapy to determine whether virtual reality provides additional therapeutic benefits. Participants will: * Undergo standard postoperative physical therapy after lumbar disc surgery. * Some participants will additionally perform virtual reality-based rehabilitation exercises. * Be evaluated for pain severity, functional improvement, blood biomediators, pain threshold, and psychological outcomes.
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Pain Intensity (VAS)
Timeframe: Baseline (Postoperative Day 1, before intervention) and at postoperative day 2 (upon completion of the intervention).
Pain Pressure Threshold (Algometry)
Timeframe: Baseline (Postoperative Day 1, before intervention) and at postoperative day 2 (upon completion of the intervention).
Blood Biomediators (CRP, Cortisol, Leukocyte Count)
Timeframe: Baseline (Postoperative Day 1, before intervention) and at postoperative day 2 (upon completion of the intervention).