Evidence map›Paper›PMID 23928929›Full record

Trial reportKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA2013

Intra-operative results and radiological outcome of conventional and patient-specific surgery in total knee arthroplasty: a multicentre, randomised controlled trial.

B Boonen, M G M Schotanus, B Kerens, W van der Weegen, R A M van Drumpt, N P Kort

Abstract readComparative StudyMulticenter StudyRandomized Controlled Trial
PubMed Publisher
In one paragraph

Trial report in Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 71 papers, 10 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
71citing papers in PubMed, 10 pooled it
–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

71 citing papers in PubMed, 10 syntheses or guidelines pooled it.

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  5. Favourable alignment outcomes with MRI-based patient-specific instruments in total knee arthroplasty.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2018
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11 more citing papers are in PubMed but not listed here.

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.

B BoonenViecuri Medical Centre, Tegelseweg 210, 5912 BL, Venlo, The Netherlands, boonenbert@gmail.com.
M G M Schotanus
B Kerens
W van der Weegen
R A M van Drumpt
N P Kort

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThis prospective, double-blind, randomised controlled trial was designed to address the following research questions: firstly, is there a significant difference in outliers in alignment in the frontal and sagittal plane between PSG TKA and conventional TKA. Secondly, is there a significant difference in operation time, blood loss and length of hospital stay between the two techniques. We hypothesise that there will be fewer outliers with PSG TKA and that operation time, blood loss and length of hospital stay can be significantly reduced with PSG.

methodsA total of 180 patients were randomised for PSG TKA (group 1) or conventional TKA (group 2) in two centres. Patients were stratified per hospital. Alignment of the mechanical axis of the leg and flexion/extension and varus/valgus of the individual prosthesis components were measured on digital, standing, long-leg and standard lateral radiographs by two independent outcome assessors in both centres. Percentages of outliers (>3°) were determined. We compared blood loss, operation time and length of hospital stay.

resultsThere was no statistically significant difference in mean mechanical axis or outliers in mechanical axis between groups. No statistically significant difference was found for the alignment of the individual components in the frontal plane nor for the percentages of outliers. There was a statistically significant difference in outliers for the femoral component in the sagittal plane, with a higher percentage of outliers in the group 1 (p = 0.017). No such significant result was found for the tibial component in that plane. All interclass correlation coefficients were good. Blood loss was 100 mL less in group 1 (p < 0.001). Operation time was 5 min shorter in group 1 (p < 0.001). Length of hospital stay was identical with a mean of 3.6 days (p = 0.657).

conclusionsThe results in terms of obtaining a neutral mechanical axis and a correct position of the prosthesis components did not differ between groups. A small reduction in operation time and blood loss was found with the PSG system. Future research should especially focus on cost-effectiveness analysis and functional outcome of PSG TKA. LEVEL OF EVIDENCE: I.

Indexed as

AgedArthroplasty, Replacement, KneeBlood Loss, SurgicalBone MalalignmentDouble-Blind MethodFemaleFollow-Up StudiesHumansIntraoperative PeriodKnee JointKnee ProsthesisLength of StayMagnetic Resonance ImagingMaleMiddle AgedOperative Time

Identifiers

PMID23928929

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.