Evidence map›Paper›PMID 33510553›Full record

ArticleJournal of orthopaedics

A meta-analysis of clinical and radiological outcomes in simultaneous bilateral unicompartmental knee arthroplasty.

Haowen Kwan, Kendrick To, Christine Bojanic, Karl Romain, Wasim Khan

Abstract read
In one paragraph

Article in Journal of orthopaedics. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing 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

3 citing papers in PubMed.

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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.

Haowen KwanSchool of Clinical Medicine, University of Cambridge, Hills Road, Cambridge, CB2 0QQ, UK.
Kendrick ToDivision of Trauma and Orthopaedics, Department of Surgery, University of Cambridge, Addenbrooke's Hospital, Cambridge, CB2 0QQ, UK.
Christine BojanicDivision of Plastic and Reconstructive Surgery, Department of Surgery, University of Cambridge, Addenbrooke's Hospital, Cambridge, CB2 0QQ, UK.
Karl RomainSchool of Clinical Medicine, University of Cambridge, Hills Road, Cambridge, CB2 0QQ, UK.
Wasim KhanDepartment of Pharmacology, University of Cambridge, Tennis Court Road, Cambridge, CB2 1PD, UK.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe most common pattern seen in bilateral knee osteoarthritis involves only the medial compartment in both knees. In such cases, bilateral Unicompartmental Knee Arthroplasty (UKA) would be a suitable surgery, this can be done simultaneously in one surgery or in stages with a period of time between each UKA. Simultaneous bilateral UKA in appropriately selected patients have the potential advantages of a lower cost, a shorter hospital stay, and a shorter overall recovery process. Despite this, there are concerns that operating on both knees in one surgery may increase the risk of complications, revisions and mortality.

methodsA PRISMA systematic review and meta-analysis was conducted using three databases (MEDLINE, EMBASE, and Scopus) to identify all studies which investigated either clinical or radiological outcomes in simultaneous bilateral UKA.

resultsAll sixteen studies included found that simultaneous bilateral UKA improved clinical and radiological outcomes. Eight studies compared clinical or radiological outcomes between simultaneous and staged bilateral UKA. Simultaneous bilateral UKA was found to have a significantly shorter length of operation, length of hospital stay, and a lower treatment cost (P < 0.001). Our meta-analysis found no statistically significant difference in the all-cause complication rate between simultaneous and staged bilateral UKA (P = 0.36). Only one study compared radiological outcomes between simultaneous and staged bilateral UKA which found no significant difference.

conclusionOur review suggests that simultaneous bilateral UKA is comparable to staged bilateral UKA in terms of clinical and radiological outcomes and has the potential to be increasingly adopted in clinical practice due to its superior cost-effectiveness.

Indexed as

ArthroplastyKneeMeta-analysisSimultaneousUnicompartmental

Identifiers

PMID33510553
PMCPMC7815461

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