Fig. 6From: Combined femoral and sciatic nerve block versus femoral and local infiltration anesthesia for pain control after total knee arthroplasty: a meta-analysis of randomized controlled trialsThe trial sequence analysis of the visual analogue scale (VAS) scores with rest at 12Â h, showing that the accumulative Z-curve crossed the trial sequential monitoring boundary for harm and surpassed the required information sizeBack to article page