Evidence map›Paper›PMID 39810708›Full record

ArticleKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA2025

Higher bone cement volume in total knee arthroplasty lowers the risk of postoperative radiolucent lines.

Maximilian Keintzel, Maria A Smolle, Kevin Staats, Christoph Böhler, Reinhard Windhager, Amir Koutp, Andreas Leithner, Stefanie Donner, Carsten Perka, Tobias Reiner and 5 more

Abstract readMulticenter Study
In one paragraph

Article in Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing 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

1 citing paper in PubMed.

  1. Higher bone cement volume in total knee arthroplasty lowers the risk of postoperative radiolucent lines.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2025
    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

15 authors.

Maximilian KeintzelDepartment of Orthopedics and Trauma-Surgery, Medical University of Vienna, Vienna, Austria.
Maria A SmolleDepartment of Orthopedics and Trauma, Medical University of Graz, Graz, Austria.ORCID http://orcid.org/0000-0003-1021-0899
Kevin StaatsDepartment of Orthopedics and Trauma-Surgery, Medical University of Vienna, Vienna, Austria.
Christoph BöhlerDepartment of Orthopedics and Trauma-Surgery, Medical University of Vienna, Vienna, Austria.
Reinhard WindhagerDepartment of Orthopedics and Trauma-Surgery, Medical University of Vienna, Vienna, Austria.
Amir KoutpDepartment of Orthopedics and Trauma, Medical University of Graz, Graz, Austria.
Andreas LeithnerDepartment of Orthopedics and Trauma, Medical University of Graz, Graz, Austria.
Stefanie DonnerCenter for Musculoskeletal Surgery, Charité - Universitätsmedizin Berlin, Berlin, Germany.
Carsten PerkaCenter for Musculoskeletal Surgery, Charité - Universitätsmedizin Berlin, Berlin, Germany.
Tobias ReinerDepartment of Orthopaedics, Heidelberg University Hospital, Heidelberg, Germany.
Tobias RenkawitzDepartment of Orthopaedics, Heidelberg University Hospital, Heidelberg, Germany.
Alexandra LeicaDepartment of Orthopaedic Surgery and Traumatology, Kantonsspital Baselland, Bruderholz, Switzerland.
Manuel SavaDepartment of Orthopaedic Surgery and Traumatology, Kantonsspital Baselland, Bruderholz, Switzerland.
Michael HirschmannDepartment of Orthopaedic Surgery and Traumatology, Kantonsspital Baselland, Bruderholz, Switzerland.
Patrick SadoghiDepartment of Orthopedics and Trauma, Medical University of Graz, Graz, Austria.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThe aim of this multicenter study was to analyze the potential impact of patient demographics and cementation technique towards the development of radiolucent lines (RLLs) in primary total knee arthroplasty (TKA). It was hypothesized that cementation techniques, including higher cement volume, double-layer cementation technique and hardening in full extension, reduce RLL incidence by improving stability, whereas demographic factors such as age, BMI and smoking may increase RLL risk by affecting bone quality and mechanical loading.

methodsAltogether, 776 patients (median age: 70.7 years; 39.2% males) underwent TKA at five tertiary orthopaedic centres between 11/2013 and 04/2023. X-rays were analyzed retrospectively for the evaluation of RLLs taken between 6 and 36 months from surgery. RLLs on anterior-posterior and lateral X-rays taken at a median of 14 months (range: 6-36) from primary surgery were evaluated using the Knee Society roentgenographic evaluation and scoring system. Potential associations of demographics and cementation technique on the occurrence of RLLs during follow-up were analyzed with uni- and multivariate logistic regression models.

resultsThe overall incidence of RLLs around the TKA amounted to 37.4% (n = 290), with the tibial component (29.4%) being more commonly affected than the femoral component (15.0%). Patient age, gender, BMI and smoking habits were not significantly associated with higher incidence of RLLs (p > 0.05). The amount of cement used (odds ratio: 0.99; 95% confidence interval: 0.98-0.99; p = 0.028) was independently associated with a lower incidence of RLLs, irrespective of the double- versus single-layer cementation technique, cement hardening in full extension and time required for the X-ray.

conclusionsNo influence of demographic data on the incidence of RLL was found, yet specific cementation techniques appeared beneficial. Future studies with longer follow-up periods are required to provide further insight into the herein-made preliminary findings and to assess potential associations with long-term aseptic loosening rates. LEVEL OF EVIDENCE: Level III, retrospective observational study.

Indexed as

Arthroplasty, Replacement, KneeBone CementsCementationOsteoarthritis, KneePostoperative ComplicationsAgedAged, 80 and overFemaleHumansKnee JointKnee ProsthesisMaleMiddle AgedRadiographyRetrospective StudiesRisk FactorsBone Cementsaseptic looseningcementation techniqueradiolucent linestotal knee arthroplasty

Identifiers

PMID39810708
PMCPMC12104793

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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.