Bilateral erector spinae plane block for postoperative pain relief in lumbar spine surgery: A PRISMA-compliant updated systematic review & meta-analysis.

On analysis, although ESPB group showed a trend towards earlier ambulation; the difference was not statistically significant (WMD = −7.23, 95% CI [−24.00, 9.55], p = 0.45; I 2 = 96.28%, p < 0.001), as shown in Fig. 5 . 3.4.3.

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