Evidence map›Paper›PMID 40483658›Full record

ArticleEuropean journal of orthopaedic surgery & traumatology : orthopedie traumatologie2025

Risks for reoperation to promote union in periprosthetic distal femur fractures.

Adam Michael Schlauch, Ishan Shah, Benjamin Crawford, Anna Martin, Anton Denisov, Pierre Tamer, Brian Farrell

Abstract readMulticenter StudyComparative Study
PubMed Publisher
In one paragraph

Article in European journal of orthopaedic surgery & traumatology : orthopedie traumatologie, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing 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

2 citing papers in PubMed.

  1. Review
  2. Outcomes of Periprosthetic Distal Femur Fractures by Fixation Construct: A Retrospective Cohort Study.Journal of the American Academy of Orthopaedic Surgeons. Global research & reviews · 2026
    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.

Adam Michael SchlauchSan Francisco Orthopaedic Residency Program, San Francisco, United States. aschlauch19@gmail.com.
Ishan ShahSan Francisco Orthopaedic Residency Program, San Francisco, United States.
Benjamin CrawfordSan Francisco Orthopaedic Residency Program, San Francisco, United States.
Anna MartinSan Francisco Orthopaedic Residency Program, San Francisco, United States.
Anton DenisovTraumatología Elgeadi/Hospital, Madrid, Spain.
Pierre TamerSan Francisco Orthopaedic Residency Program, San Francisco, United States.
Brian FarrellSan Francisco Orthopaedic Residency Program, San Francisco, United States.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo determine the risk factors for reoperation to promote union for periprosthetic distal femur fractures (PDFF).

methodsThis was a retrospective, multi-centered comparative study of patients with PDFF (AO 33A-C[VB1, C1, D1]) managed operatively with open reduction and internal fixation (ORIF) with a lateral locked plate (LLP). Exclusion criteria were acute management with a distal femur replacement, fixation other than LLP, less than 6 months of follow-up, and lack of injury or follow-up radiographs. The primary outcome measure was reoperation to achieve bony union. Univariate and multivariate analyses were made between cases that did and did not require a reoperation to achieve union.

resultsA total of 52 patients met inclusion criteria, of which 7 (13.5%) required a reoperation for union. There were no differences between the groups for age, sex, body mass index, comorbidities, Su classification, or open injury. Multivariate analysis identified risks for reoperation to promote union including notching preoperatively (OR 1.26, CI 1.04-1.53, p = 0.007), increased number of screws through a fracture line (OR 1.27, CI 1.15-1.41, p < 0.001), plate length < 12 holes (OR 1.15, CI 1.00-1.33, p = 0.020), and lower number of proximal screws that were locking (OR 0.95, CI 0.9-1.0, p = 0.043). Conclusions The reoperation rate to promote union was 13.5%. While limited by total case number, this study identified notching preoperatively, presence of screws through the fracture line, plate length < 12 holes, and lower number of proximal screws that were locking to be independent risk factors for reoperation to promote union.

Indexed as

Femoral FracturesFracture Fixation, InternalPeriprosthetic FracturesReoperationAgedAged, 80 and overBone PlatesFemaleFemoral Fractures, DistalFracture HealingHumansMaleMiddle AgedOpen Fracture ReductionRetrospective StudiesRisk FactorsDistal femurPeriprostheticReoperationUnion

Identifiers

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.