Evidence map›Paper›PMID 29071356›Full record

Trial reportKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA2018

No improvement in reducing outliers in coronal axis alignment with patient-specific instrumentation.

Uwe Maus, Carlos J Marques, David Scheunemann, Frank Lampe, Djordje Lazovic, Hagen Hommel, Dennis Vogel, Martin Haunschild, Tilman Pfitzner

Abstract readMulticenter StudyRandomized Controlled Trial
PubMed Publisher
In one paragraph

Trial report in Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 5 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

16 citing papers in PubMed, 5 syntheses or guidelines pooled it.

  1. Pooled it
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  6. Trial
  7. Article
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  12. Review
  13. Article
  14. Knee Prosthesis in the Computer Era.Orthopaedic surgery · 2021
    Review
  15. Article
  16. Weight-bearing radiography depends on limb loading.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2019
    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

9 authors.

Uwe MausUniversity Hospital of Orthopedic Surgery, Pius-Hospital, Carl von Ossietzky University, Georgstrasse 12, 26121, Oldenburg, Germany.
Carlos J MarquesResearch Center of the Department of Orthopedics and Joint Replacement, Schoen Klinik Hamburg Eilbek, Dehnhaide 120, 22081, Hamburg, Germany. cmarques@schoen-kliniken.de.ORCID http://orcid.org/0000-0003-3216-6382
David ScheunemannDepartment of Orthopedics and Joint Replacement, Schoen Klinik Hamburg Eilbek, Dehnhaide 120, 22081, Hamburg, Germany.
Frank LampeDepartment of Orthopedics and Joint Replacement, Schoen Klinik Hamburg Eilbek, Dehnhaide 120, 22081, Hamburg, Germany.
Djordje LazovicUniversity Hospital of Orthopedic Surgery, Pius-Hospital, Carl von Ossietzky University, Georgstrasse 12, 26121, Oldenburg, Germany.
Hagen HommelKrankenhaus Märkisch Oderland, Orthopedic Clinic, Lehrkrankenhaus der Medizinischen Hochschule Brandenburg, Sonnenburger Weg 3, 16269, Wriezen, Germany.
Dennis VogelKlinik für Orthopädie und Unfallchirurgie, St. Remigius Krankenhaus Opladen, An St. Remigius 26, 51379, Leverkusen, Germany.
Martin HaunschildKlinik für allgemeine Orthopädie, Endoprothetik und Kinderorthopädie, Katholisches Klinikum Koblenz-Montabaur, Kardinal-Krementz-Str. 1-5, 56073, Koblenz-Montabaur, Germany.
Tilman PfitznerOrthopedic Department, Center for Musculoskeletal Surgery, Charité-Universitätsmedizin Berlin, Charitéplatz, 10117, Berlin, Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purpose and hypothesisPatient-specific instrumentation (PSI) uses 3D preoperative imaging to produce individualized cutting blocks specific to patients' anatomy and according to the preoperative plan with the aim to reduce the number of mechanical leg alignment (MLA) outliers, to improve implant positioning and to decrease surgery time. The primary purpose of this study was to investigate the efficacy of a specific PSI in comparison with standard instrumentation (SI) in reducing the number of MLA outliers. It was hypothesized that the number of MLA outliers would be significantly lower in the PSI group.

methodsA multicenter randomized controlled trial was implemented. There were 59 patients in the PSI group and 66 in the SI group. The absolute number of outliers outside the ± 3° target neutral MLA was compared between the groups with a Chi-square test. As secondary outcomes, the Knee Society Score (KSS) and the Knee Injury and Osteoarthritis Outcome Score (KOOS) were compared between the groups preoperatively and at 90-day follow-up.

resultsThere were 15 (26.3%) MLA outliers in the PSI group and 8 (12.3%) in the SI group. The number of outliers was not independent from the group (

conclusionThe use of PSI did not significantly reduce the number of MLA outliers in comparison with SI. There were no differences when comparing the achieved mean MLA of both groups. LEVEL OF EVIDENCE: Level I, prospective randomized controlled trial.

Indexed as

Imaging, Three-DimensionalAgedArthroplasty, Replacement, KneeFemaleHumansKneeKnee ProsthesisMaleMiddle AgedOperative TimePostoperative PeriodProspective StudiesQuality of LifeSurgery, Computer-AssistedTreatment OutcomeClinical outcomesMechanical leg alignmentPatient-specific instrumentationTotal knee replacement

Identifiers

PMID29071356

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.