Evidence map›Paper›PMID 31703706›Full record

SynthesisJournal of orthopaedic surgery and research2019

The effects of tourniquet use on blood loss in primary total knee arthroplasty for patients with osteoarthritis: a meta-analysis.

D F Cai, Q H Fan, H H Zhong, S Peng, H Song

Registry-linked trialOpen access · goldAbstract readMeta-AnalysisReview
In one paragraph

Synthesis in Journal of orthopaedic surgery and research, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05144425 (Evaluation of Blood Loss and Pain in TKA With and Without Pneumatic Tourniquet, A Randomized Controlled Trial), which is not on this map. Cited by 53 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
53citing papers in PubMed, 5 pooled it
5.9field-weighted citation impact, top 2% 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.

NCT05144425 naunknown statusnot on this mapstarted 2021, after this paper: background citation

Evaluation of Blood Loss and Pain in TKA With and Without Pneumatic Tourniquet, A Randomized Controlled Trial

TypeinterventionalSponsorAssiut UniversityRan2021 to 2022Enrolled100ConditionsTotal Blood LossArmstotal knee arthroplasty with and without using pneumatic tourniquet
3 · Its place in the literature

Who cites it

53 citing papers in PubMed, 5 syntheses or guidelines pooled it, 98 citations in OpenAlex.

  1. Total knee arthroplasty with or without a tourniquet: a meta-analysis of randomized controlled trials.European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 2025
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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

5 authors at 1 institution in 1 country.

D F CaiDepartment of Orthopaedic Surgery, Affiliated Hospital of Zunyi Medical College, 149 Dalian Road, Huichuan District, Zunyi City, Gui Zhou Province, China. caidongfeng1688@163.com.ORCID http://orcid.org/0000-0002-1256-6998
Q H FanDepartment of Orthopaedic Surgery, Affiliated Hospital of Zunyi Medical College, 149 Dalian Road, Huichuan District, Zunyi City, Gui Zhou Province, China.
H H ZhongDepartment of Orthopaedic Surgery, Affiliated Hospital of Zunyi Medical College, 149 Dalian Road, Huichuan District, Zunyi City, Gui Zhou Province, China.
S PengDepartment of Orthopaedic Surgery, Affiliated Hospital of Zunyi Medical College, 149 Dalian Road, Huichuan District, Zunyi City, Gui Zhou Province, China.
H SongDepartment of Orthopaedic Surgery, Affiliated Hospital of Zunyi Medical College, 149 Dalian Road, Huichuan District, Zunyi City, Gui Zhou Province, China.
Affiliated Hospital of Zunyi Medical College · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe tourniquet is a common medical instrument used in total knee arthroplasty (TKA). However, there has always been a debate about the use of a tourniquet and there is no published meta-analysis to study the effects of a tourniquet on blood loss in primary TKA for patients with osteoarthritis.

methodsWe performed a literature review on high-quality clinical studies to determine the effects of using a tourniquet or not on blood loss in cemented TKA. PubMed, Web of Science, MEDLINE, Embase, and the Cochrane Library were searched up to November 2018 for relevant randomized controlled trials (RCTs). We conducted a meta-analysis following the guidelines of the Cochrane Reviewer's Handbook. We used the Cochrane Collaboration's tool for assessing the risk of bias of each trial. The statistical analysis was performed with Review Manager statistical software (version 5.3).

resultsEleven RCTs involving 541 patients (541 knees) were included in this meta-analysis. There were 271 patients (271 knees) in the tourniquet group and 270 patients (270 knees) in the no tourniquet group. The results showed that using a tourniquet significantly decreased intraoperative blood loss (P < 0.002), calculated blood loss (P < 0.002), and the time of operation (P < 0.002), but tourniquet use did not significantly decrease postoperative blood loss (P > 0.05), total blood loss (P > 0.05), the rate of transfusion (P > 0.05), and of deep vein thrombosis (DVT) (P > 0.05) in TKA.

conclusionsUsing a tourniquet can significantly decrease intraoperative blood loss, calculated blood loss, and operation time but does not significantly decrease the rate of transfusion or the rate of DVT in TKA. More research is needed to determine if there are fewer complications in TKA without the use of tourniquets.

Indexed as

Arthroplasty, Replacement, KneeBlood Loss, SurgicalBlood TransfusionHumansOsteoarthritis, KneeRandomized Controlled Trials as TopicTourniquetsTreatment OutcomeBlood lossComplicationsTotal knee arthroplastyTourniquet

Identifiers

PMID31703706
PMCPMC6839231
OpenAlexW2984730569

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.