Evidence map›Paper›PMID 32388648›Full record

SynthesisArchives of orthopaedic and trauma surgery2021

Incidence of nonunion after surgery of distal femoral fractures using contemporary fixation device: a meta-analysis.

Byung-Ho Yoon, In Keun Park, Youngwoo Kim, Hyoung-Keun Oh, Suk Kyu Choo, Yerl-Bo Sung

Registry-linked trialAbstract readMeta-Analysis
PubMed Publisher
In one paragraph

Synthesis in Archives of orthopaedic and trauma surgery, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05272631 (Depuy Synthes Lower Extremity Shaft Nail Registry), which is not on this map. Cited by 22 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 5 pooled it
4.1field-weighted citation impact, top 5% of its field
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.

NCT05272631 completednot on this mapstarted 2022, after this paper: background citation

Depuy Synthes Lower Extremity Shaft Nail Registry (RFN-Advanced™ Retrograde Femoral Nailing System/ TN-Advanced™ Tibial Nailing System)

Typeobservational_patient_registrySponsorDePuy Synthes Products, Inc.Ran2022 to 2025Enrolled241ConditionsFemoral Fractures, Tibial FracturesArmsRetrograde Femoral Nail Advanced, Tibial Nail Advanced
3 · Its place in the literature

Who cites it

22 citing papers in PubMed, 5 syntheses or guidelines pooled it, 44 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Interventions for treating fractures of the distal femur in adults.The Cochrane database of systematic reviews · 2022
    Pooled it
  4. Pooled it
  5. Pooled it
  6. Clinical outcomes and risk factors in the surgical treatment of distal femur fractures.European journal of trauma and emergency surgery : official publication of the European Trauma Society · 2026
    Article
  7. Article
  8. Article
  9. Article
  10. [Effectiveness of staged therapy using external fixation frame for infectious nonunion near knee joint].Zhongguo xiu fu chong jian wai ke za zhi = Zhongguo xiufu chongjian waike zazhi = Chinese journal of reparative and reconstructive surgery · 2025
    Article
  11. Article
  12. Article
  13. Review
  14. Rates of interlock screw back-out are high with the retrograde femoral nailing advanced system for distal femur fractures.European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 2024
    Article
  15. Article
  16. Article
  17. Article
  18. Modified use of the proximal humeral internal locking system (PHILOS) plate for distal femoral nonunions.European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 2023
    Article
  19. Article
  20. 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

6 authors at 4 institutions in 1 country.

Byung-Ho Yoon *Department of Orthopaedic Surgery, Inje University College of Medicine, Seoul Paik Hospital, Seoul, South Korea.
In Keun Park *Department of Orthopaedic Surgery, Inje University College of Medicine, Seoul Paik Hospital, Seoul, South Korea.
Youngwoo KimDepartment of Orthopedic Surgery, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea.
Hyoung-Keun OhDepartment of Orthopedic Surgery, Ilsan Paik Hospital, Inje University College of Medicine, Goyang, South Korea.
Suk Kyu ChooDepartment of Orthopedic Surgery, Ilsan Paik Hospital, Inje University College of Medicine, Goyang, South Korea.
Yerl-Bo SungDepartment of Orthopaedic Surgery, Inje University College of Medicine, Sanggye Paik Hospital, Seoul, South Korea. ybs58@paik.ac.kr.
Inje University Ilsan Paik Hospital · KRInje University Seoul Paik Hospital · KRCatholic University of Korea · KRInje University Sanggye Paik Hospital · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeNonunion is the most frequent cause of reoperation and is associated with high morbidity after distal femur fracture (DFF). We examined the rates of nonunion requiring reoperation after fixation for DFF using a locking compression plate (LCP) or retrograde intramedullary nail (RIMN).

methodsWe included four studies comparing LCP and RIMN and 38 single-cohort studies reporting LCP or RIMN. In total, 2156 femurs were included and 166 non-unions were detected. We conducted a pair-wise meta-analysis (with a fixed-effects model) on the four comparative studies and a proportional meta-analysis on the 38 articles to estimate the nonunion rate. We performed sensitivity analysis by comparing studies using LCP with less invasive surgical systems (LISS) with those that used RIMN.

resultsThe pairwise meta-analysis showed a similar nonunion rate between the groups [odds ratio: 1.02; 95% confidence interval (CI) 0.94-1.11, p = 0.633]. According to proportional meta-analysis, the pooled prevalence of nonunion was 5% (95% CI 4-7) totally, 6% (95% CI 4-8) in the LCP group, and 4% (95% CI 2-6) in the RIMN group (heterogeneity: p = 0.105). According to the sensitivity analysis, there was no difference in the union rate. The pooled prevalence of nonunion from sensitivity analysis was 4 % (95% CI, 3-5); it was 4% (95% CI, 3-6) in LCP with LISS and was 4% (95% CI, 2-6) in RIMN group (heterogeneity: p = 0.941).

conclusionApproximately 5% of patients who underwent LCP or RIMN fixation developed nonunion. Therefore, LCP and RIMN are effective DFF techniques and mastering one of them is essential.

Indexed as

Bone NailsBone PlatesFracture Fixation, InternalFemoral FracturesFemurHumansIncidencePostoperative ComplicationsDistal femoral fractureIntramedullary nailLocking compression plateMeta-analysis

Identifiers

PMID32388648
OpenAlexW3022076097

What OpenQuestion holds

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Read underepoch 390

Registered trials

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.