Evidence map›Paper›PMID 40461570›Full record

ArticleScientific reports2025

A comparative study of internal fixation with porous tantalum screws and cannulated screws in the treatment of femoral neck fractures.

Dewei Zhao, Yu Zhang, Liangliang Cheng, Zhijie Ma, Feng Wang, Xing Qiu, Jiawei Ying, Tianwei Zhang, Fuyang Wang

Abstract readComparative Study
PubMed Full text at PMC Publisher
In one paragraph

Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed, 1 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

2 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. 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.

Dewei Zhao *Department of Orthopaedics, Affiliated Zhongshan Hospital of Dalian University, No 6 Jiefang Street, Zhongshan District, Dalian, 116001, Liaoning, China. zhaodewei2016@163.com.
Yu Zhang *Department of Orthopaedics, Affiliated Zhongshan Hospital of Dalian University, No 6 Jiefang Street, Zhongshan District, Dalian, 116001, Liaoning, China.
Liangliang ChengDepartment of Orthopaedics, Affiliated Zhongshan Hospital of Dalian University, No 6 Jiefang Street, Zhongshan District, Dalian, 116001, Liaoning, China.
Zhijie MaDepartment of Orthopaedics, Affiliated Zhongshan Hospital of Dalian University, No 6 Jiefang Street, Zhongshan District, Dalian, 116001, Liaoning, China.
Feng WangDepartment of Orthopaedics, Affiliated Zhongshan Hospital of Dalian University, No 6 Jiefang Street, Zhongshan District, Dalian, 116001, Liaoning, China.
Xing QiuDepartment of Orthopaedics, Affiliated Zhongshan Hospital of Dalian University, No 6 Jiefang Street, Zhongshan District, Dalian, 116001, Liaoning, China.
Jiawei YingDepartment of Orthopaedics, Affiliated Zhongshan Hospital of Dalian University, No 6 Jiefang Street, Zhongshan District, Dalian, 116001, Liaoning, China.
Tianwei ZhangDepartment of Orthopaedics, Affiliated Zhongshan Hospital of Dalian University, No 6 Jiefang Street, Zhongshan District, Dalian, 116001, Liaoning, China.
Fuyang WangDepartment of Orthopaedics, Affiliated Zhongshan Hospital of Dalian University, No 6 Jiefang Street, Zhongshan District, Dalian, 116001, Liaoning, China.

Funding

Dalian Key Medical Specialty Construction Fund Project "Peak Climbing" Program No. 2021-243National Natural Science Foundation of China 82172398
6 · The paper itself

Abstract

Femoral neck fractures (FNF) are a significant concern, particularly in elderly patients with osteoporosis and younger individuals experiencing high-energy traumas. Traditional treatments, like cannulated compression screws (CCSs), often result in complications such as avascular necrosis (AVN). This study evaluated the effectiveness of bidirectional compression porous tantalum screws (BCPTSs) against conventional CCSs in FNF treatment. A retrospective study was conducted on 109 patients with FNF treated at Zhongshan Hospital, Dalian University, from January 2016 to December 2020. Patients were divided into three groups based on the fixation method: two CCSs, three CCSs, and BCPTSs. Postoperative outcomes were assessed using anteroposterior radiographs, with follow-up evaluations at six weeks, three months, 12 months, and 24 months. Diabetic patients were also included as subjects of observation to analyze the association between postoperative osteonecrosis and diabetes. In the two CCSs group, seven patients (7/20, 35%) experienced AVN, compared to 17 patients (17/39, 43.58%) in the three CCSs group. In contrast, only one patient (1/50, 2%) in the BCPTSs group developed nonunion, with no cases of AVN. In a comparison among diabetic patients, there was one case of postoperative AVN in the two CCSs group, five cases in three CCSs group, and one case of fracture nonunion in the BCPTSs group. BCPTSs offer a superior alternative to conventional CCSs in treating FNF, particularly in reducing AVN and nonunion rates. The study highlights the importance of vascular preservation and contributes a new option for treating FNF.

Indexed as

Bone ScrewsFemoral Neck FracturesFracture Fixation, InternalTantalumAdultAgedAged, 80 and overFemaleHumansMaleMiddle AgedPorosityPostoperative ComplicationsRetrospective StudiesTreatment OutcomeTantalumAvascular necrosisDiabetesFemoral neck fracturePorous tantalum screws

Identifiers

PMID40461570
PMCPMC12134232

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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.