Comparison	Outcome	Subgroup	Effect size (SMD)	No. of studies (N)	Fail‐safe‐n
1. FNB vs PCA opioid	Analysis 1.1—Pain at rest at 24 hours	Overall	‐0.72	19	60
1. FNB vs PCA opioid	Analysis 1.2—Pain at rest at 24 hours by allocation concealment	Low risk of bias RCTs	‐0.54	9	18
1. FNB vs PCA Opioid	Analysis 1.5—Pain on movement at 24 hours	Overall	‐0.94	17	78
1. FNB vs PCA opioid	Analysis 1.6—Pain on movement at 24 hours by allocation concealment	Low risk of bias RCTs	‐0.54	9	18
2. FNB vs epidural	Analysis 2.1—Pain at Rrest at 24 hours	< not significant, not applicable >
2. FNB vs epidural	Analysis 2.5—Pain on movement at 24 hours	< not significant, not applicable >
3. FNB vs local infiltration	Analysis 2.1—Pain at rest at 24 hours	< not significant, not applicable >
3. FNB vs local infiltration	Analysis 2.5—Pain on movement at 24 hours	< not significant, not applicable >
4. Continuous vs single‐shot FNB	Analysis 4.1—Pain at rest at 24 hours	Overall	‐0.62	4	9
4. Continuous vs single‐shot FNB	Analysis 4.3—Pain on movement at 24 hours	Overall	‐0.42	4	5