Evidence map›Paper›PMID 26922056›Full record

SynthesisKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA2016

Computer navigation is effective in reducing blood loss but has no effect on transfusion requirement following primary total knee arthroplasty: a meta-analysis.

Seung-Beom Han, Hyun-Jung Kim, Tae-Kyun Kim, Yong In, Kwang-Jun Oh, In-Jun Koh, Dae-Hee Lee

Abstract readMeta-Analysis
PubMed Publisher
In one paragraph

Synthesis in Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
–field-weighted citation impact
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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

11 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Review
  8. Article
  9. Optimizing Intraoperative Blood Management for One-Stage Bilateral Total Knee Arthroplasty.HSS journal : the musculoskeletal journal of Hospital for Special Surgery · 2018
    Review
  10. Article
  11. Article
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

7 authors.

Seung-Beom HanDepartment of Orthopaedic Surgery, College of Medicine, Anam Hospital, Korea University, Seoul, South Korea.
Hyun-Jung KimDepartment of Preventive Medicine, College of Medicine, Korea University, Seoul, South Korea.
Tae-Kyun KimDepartment of Orthopaedic Surgery, College of Medicine, Seoul National University Bundang Hospital, Seoul National University, Seongnam, South Korea.
Yong InDepartment of Orthopaedic Surgery, College of Medicine, Seoul St. Mary's Hospital, Catholic University, Seoul, South Korea.
Kwang-Jun OhDepartment of Orthopaedic Surgery, Konkuk University Hospital, Konkuk University School of Medicine, Seoul, South Korea.
In-Jun KohDepartment of Orthopaedic Surgery, College of Medicine, Seoul St. Mary's Hospital, Catholic University, Seoul, South Korea.
Dae-Hee LeeDepartment of Orthopaedic Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Ilwon-ro, Gangnam-gu, Seoul, 135-710, South Korea. eoak22@empal.com.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThis meta-analysis was designed to evaluate the effects of computer navigation on blood conservation after total knee arthroplasty (TKA) by comparing postoperative blood loss and need for allogenic blood transfusion in patients undergoing computer navigation and conventional primary TKAs.

methodsStudies were included in this meta-analysis if they compared change in haemoglobin concentration before and after surgery, postoperative blood loss via drainage or calculated total blood loss, and/or allogenic blood transfusion rate following TKA using computer navigation and conventional methods. For all comparisons, odds ratios and 95 % confidence intervals (CI) were calculated for binary outcomes, while mean difference and 95 % CI were calculated for continuous outcomes.

resultsTwelve studies were included in this meta-analysis. The change in haemoglobin concentration was 0.39 g/dl lower with computer navigation than with conventional TKA (P = 0.006). Blood loss via drainage was 83.1 ml (P = 0.03) lower and calculated blood loss was 185.4 ml (P = 0.002) lower with computer navigation than with conventional TKA. However, the need for blood transfusion was similar for the two approaches (n.s.).

conclusionsThe primary TKA with computer navigation was effective in reducing haemoglobin loss and blood loss, but had no effect on transfusion requirement, compared with conventional primary TKA. These findings suggest the importance of analysing several blood loss parameters, because each may not always accurately reflect true postsurgical bleeding. LEVEL OF EVIDENCE: Meta-analysis, Level III.

Indexed as

Arthroplasty, Replacement, KneeBlood Loss, SurgicalBlood TransfusionDrainageHumansPostoperative HemorrhageSurgery, Computer-AssistedBlood lossComputer-assistedNavigationTotal knee arthroplastyTransfusion

Identifiers

PMID26922056

What OpenQuestion holds

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Registered trials

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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.