The mean PI–LL mismatch improved slightly from 13.52 ± 9.54° to 11.54 ± 10.83° (Δ −1.98 ± 6.19°, P = 0.080), but these differences did not reach statistical significance ( Table 3 ).
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Patient-Reported and Radiographic Outcomes at Two Years Following Unilateral Biportal Endoscopic Fusion Extension for Adjacent Segment Disease: A Retrospective Cohort Study.
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