Assisted full-endoscopic spine surgery for lumbar spinal stenosis: Technical note and learning curve.

Phase 3 also showed a reduction from 46 min 40 s (initial) to 36 min 56 s (advanced), though this difference did not reach statistical significance (p = 0.075) ( Fig. 5 b). 3.2 Facet joint preservation Facet joint preservation rates were high in both groups, with a higher preservation rate observed in advanced-phase surgeries.

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