Table 1 Details of meta-analyses published on this subject.

From: Adductor canal block versus femoral nerve block for total knee arthroplasty: a meta-analysis of randomized controlled trials

Author

Year

Studies included

Patients (knees)

Evidence

Indicators

Conclusions

Dong et al.

2016

6 RCTs and 2 n-RCTs

751 (751)

Level III

A, B, C, D, E, G

ACB shows no superiority than FNB group. Both of them can reduce the pain score after TKA

Li et al.

2015

8 RCTs a

434 (504)

Level II

A, B, C, D, F, G, H

ACB provide better ambulation ability, faster recovery and better pain control at rest after TKA compared to FNB

Kuang et al.

2015

4 RCTs and 3 CCTs

828 (828)

Level III

A, B, C, D, E, F, H

ACB results in fast pain relief and early ambulation while decreasing post-operative nausea

Li et al.

2015

7 RCTs and 2 n-RCTs

639 (639)

Level III

A, B, C, D, E, F

ACB preserved the strength of quadriceps more than FNB and achieves similar analgesic effects in postoperative pain

  1. RCT, randomized controlled trial; n-RCT, non-randomized controlled trial; CCT, controlled clinical trial; ACB, adductor canal block; FNB, femoral never block; TKA, total knee arthroplasty; A, pain; B, opioid consumption; C, hospital stay; D, complications; E, muscle strength; F, risk of falls; G, MVIC of Quadriceps and Adductor; H, time up & go test.
  2. aTwo of these RCTs was not about TKA patients.
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