Evidence map›Paper›PMID 30069691›Full record

ArticleEuropean journal of orthopaedic surgery & traumatology : orthopedie traumatologie2019

Undisplaced femoral neck fractures need a closed reduction before internal fixation.

Tatsuya Yamamoto, Yoshiomi Kobayashi, Hiroaki Nonomiya

Abstract read
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In one paragraph

Article in European journal of orthopaedic surgery & traumatology : orthopedie traumatologie, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed, 1 pooled it
2.6field-weighted citation impact, top 11% 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.

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

8 citing papers in PubMed, 1 synthesis or guideline pooled it, 23 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Early outcomes of the synthes femoral neck system for valgus-impacted femoral neck fractures: a multicenter retrospective study.European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 2025
    Article
  4. Article
  5. [Risk factors for osteonecrosis of femoral head after femoral neck fracture fixation with femoral neck system].Zhongguo xiu fu chong jian wai ke za zhi = Zhongguo xiufu chongjian waike zazhi = Chinese journal of reparative and reconstructive surgery · 2023
    Article
  6. Article
  7. Article
  8. [Research progress in treatment of femoral neck fracture in the elderly].Zhongguo xiu fu chong jian wai ke za zhi = Zhongguo xiufu chongjian waike zazhi = Chinese journal of reparative and reconstructive surgery · 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

3 authors at 2 institutions in 1 country.

Tatsuya YamamotoDepartment of Orthopaedic Surgery, Saiseikai Yokohamashi Tobu Hospital, 3-6-1, Shimosueyoshi, Tsurumi Ward, Yokohama, Kanagawa, 230-0012, Japan. tacchan.0517@gmail.com.ORCID http://orcid.org/0000-0001-9935-9985
Yoshiomi KobayashiDepartment of Orthopaedic Surgery, Japanese Red-Cross Shizuoka Hospital, Shizuoka, Japan.
Hiroaki NonomiyaDepartment of Orthopaedic Surgery, Japanese Red-Cross Shizuoka Hospital, Shizuoka, Japan.
Shizuoka Red Cross Hospital · JPSaiseikai Yokohama Eastern Hospital · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionUndisplaced femoral neck fractures (UFNF) are generally treated with in situ internal fixation, and few studies have addressed the impact of closed reduction. The aim of this study was to investigate the clinical outcome of UFNF treated with internal fixation using the Hansson pinloc system after closed reduction. PATIENTS AND

methodsThis was a retrospective study of 40 patients who underwent internal fixation using the Hansson pinloc system after closed reduction between September 2014 and May 2016. In the present study, posterior tilt, presence of complete fracture, interval from injury to surgery, and changes in activities of daily living were statistically analyzed to investigate the association between nonunion and late segmental collapse (LSC).

resultsFive cases each of nonunion and LSC were identified. The frequency of LSC was significantly higher in patients with preoperative posterior tilt ≥ 20° (p < 0.05). The risks of nonunion and LSC were lower in patients with incomplete fracture (p < 0.05) and fixation within 48 h (p < 0.05). Of the 40 patients, 34 were categorized in the sufficient reduction group fixed with posterior tilt ≤ 5°. Secondary operation rate was lower in the sufficient reduction group (5/34 cases) than in the insufficient reduction group (3/6 cases). DISCUSSION: The fixation timing < 48 h decrease the risk of fracture healing complications and sufficient reduction may reduce the risk of secondary operation. Preoperative posterior tilt ≥ 20° and complete fractures on CT scans were related to poor prognosis.

Indexed as

Closed Fracture ReductionFracture Fixation, InternalAdultAgedAged, 80 and overFemaleFemoral Neck FracturesFractures, UnunitedHumansMaleMiddle AgedPrognosisReoperationRetrospective StudiesTime-to-TreatmentTomography, X-Ray ComputedClosed reductionHansson pinloc systemLate segmental collapseNonunionPosterior tiltUndisplaced femoral neck fractures

Identifiers

PMID30069691
OpenAlexW2886629117

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Registered trials

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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.