Evidence map›Paper›PMID 33126306›Full record

SynthesisMedicine2020

Local infiltration vs epidural analgesia for postoperative pain control after total knee or hip arthroplasty: A meta-analysis of randomized controlled trials.

Xian Liu, Haijing Zhang, Huan Zhang, Mengzhuo Guo, Yuanchao Gao, Chunyan Du

Registry-linked trialOpen access · goldAbstract readComparative StudyMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Medicine, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT06872528 (Comparison of Epidural Analgesia With Intra-Articular Infiltration Analgesia for Postoperative Total Knee Arthroplasty Analgesia), which is not on this map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
2.0field-weighted citation impact, top 13% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT06872528 nanot yet recruitingnot on this mapstarted 2025, after this paper: background citation

Comparison of Epidural Analgesia With Intra-Articular Infiltration Analgesia for Postoperative Total Knee Arthroplasty Analgesia: A Prospective, Randomized Controlled Trial

TypeinterventionalSponsorNamik Kemal UniversityRan2025 to 2025Enrolled30ConditionsEpidural, Analgesia, Local InfiltrationArmsRecording the amount of medication and the number of complications according to observational follow-up
3 · Its place in the literature

Who cites it

8 citing papers in PubMed, 14 citations in OpenAlex.

  1. Trial
  2. Trial
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  4. Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 3 institutions in 2 countries.

Xian LiuDepartment of Anesthesiology, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing 102218, PR China.
Haijing Zhang
Huan Zhang
Mengzhuo Guo
Yuanchao Gao
Chunyan Du
Creative Commons · USBeijing Tsinghua Chang Gung Hospital · CNTsinghua University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundInconsistent results have been obtained regarding postoperative pain control using local infiltration and epidural analgesia for patients after total knee or hip arthroplasty (TKA and THA). We therefore conducted a meta-analysis of randomized controlled trials (RCTs) to assess the efficacy and safety of local infiltration vs epidural analgesia for TKA and THA.

methodsElectronic searches were conducted on PubMed, EmBase, and the Cochrane library to identify eligible RCTs conducted up to February 2020. Weighted mean difference (WMD) and relative risk with 95% confidence interval (95%CI) were applied to calculate pooled effect estimates between local infiltration and epidural analgesia using the random-effects model.

resultsSeven RCTs including a total of 412 TKA patients, and three RCTs including a total of 200 THA patients were selected for this meta-analysis. We noted that local infiltration was associated with lower visual analog scale (VAS) scores at rest after 48 hours (WMD: -1.31; 95%CI: -2.44 to -0.18; P = .024) and 72 hours (WMD: -0.95; 95%CI: -1.39 to -0.52; P < .001) for patients with TKA, while local infiltration significantly reduced VAS scores at rest after 12 hours for patients with THA (WMD: -1.00; 95%CI: -1.49 to -0.51; P < .001). Moreover, local infiltration was associated with lower VAS scores during movement after 48 hours in TKA patients (WMD: -1.08; 95%CI: -1.86 to -0.29; P = .007), while there were higher VAS scores during movement after 24 hours for patients with THA (WMD: 1.06; 95%CI: 0.67 to 1.45; P < .001). Furthermore, we noted that local infiltration was associated with higher flexion angles compared with epidural analgesia after 24 hours (WMD: 7.11; 95%CI: 2.30-11.93; P = .004), 48 hours (WMD: 6.69; 95%CI: 3.78 to 9.59; P < .001), and 72 hours (WMD: 5.19; 95%CI: 0.95-9.44; P = .016). There were no significant differences between local infiltration and epidural analgesia for the length of hospital stay, nausea, or wound infection.

conclusionsLocal infiltration is superior to epidural analgesia for postoperative pain control after TKA, whereas for THA patients inconsistent results were obtained at various times.

Indexed as

AgedAnalgesia, EpiduralAnalgesicsArthroplasty, Replacement, HipArthroplasty, Replacement, KneeFemaleHip JointHumansKnee JointMaleMiddle AgedPain ManagementPain MeasurementPostoperative PainRandomized Controlled Trials as TopicTreatment OutcomeAnalgesics

Identifiers

PMID33126306
PMCPMC7598777
OpenAlexW3094906644

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.