Evidence map›Paper›PMID 40405220›Full record

ArticleJournal of orthopaedic surgery and research2025

Separate vertical wiring versus conventional tension band fixation for inferior pole patellar fractures: a prospective cohort study on postoperative patella baja and functional outcomes.

Yanchun Gao, Shichang Zhao, Xingang Yu, Yun Qian, Dehao Fu

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

Article in Journal of orthopaedic surgery and research, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing 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

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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

5 citing papers in PubMed.

  1. [Treatment of comminuted fractures of inferior pole of patella with Krackow suture of patellar tendon with vertical fixation through bone tunnels combined with Kirschner wire tension band].Zhongguo xiu fu chong jian wai ke za zhi = Zhongguo xiufu chongjian waike zazhi = Chinese journal of reparative and reconstructive surgery · 2026
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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

5 authors.

Yanchun GaoDepartment of Orthopedic Surgery, Shanghai Sixth People's Hospital, Shanghai Jiao Tong University, Shanghai, 200233, China.
Shichang ZhaoDepartment of Orthopedic Surgery, Shanghai Sixth People's Hospital, Shanghai Jiao Tong University, Shanghai, 200233, China.
Xingang YuDepartment of Orthopedic Surgery, Shanghai Sixth People's Hospital, Shanghai Jiao Tong University, Shanghai, 200233, China. xingangyu_sjtu@163.com.
Yun QianDepartment of Orthopedic Surgery, Shanghai Sixth People's Hospital, Shanghai Jiao Tong University, Shanghai, 200233, China. sakio@sjtu.edu.cn.
Dehao FuDepartment of Orthopedic Surgery, Shanghai Sixth People's Hospital, Shanghai Jiao Tong University, Shanghai, 200233, China. fudehao@sjtu.edu.cn.

Funding

Shanghai Sixth People's Hospital Cultivation Project YNHG202301
6 · The paper itself

Abstract

objectiveTo compare the clinical efficacy of the separate vertical wiring (SVW) technique and conventional tension band fixation in managing AO/OTA type A1 inferior pole patellar fractures, focusing on postoperative patella baja incidence and functional recovery.

methodsFrom January 2019 to January 2023, 242 patients with AO/OTA A1 inferior pole patellar fractures undergoing surgical treatment were assigned to the SVW group (n = 117) or tension band (TB) group (n = 125). The primary outcome was the incidence of patella baja (Insall-Salvati index < 0.8) at the 12-month follow-up. Secondary outcomes included knee range of motion (ROM), Böstman functional score, and complications.

resultsThe SVW group demonstrated a significantly lower incidence of patella baja compared to the TB group (25.6% vs. 52.1%, P < 0.001), with higher mean (Insall-Salvati index) ISI values (0.87 ± 0.16 vs. 0.76 ± 0.12, P < 0.01). Knee ROM was superior in the SVW group (124.0°±14.2° vs. 119.9°±12.4°, P = 0.017), though no significant difference was observed in Böstman scores (25.1 ± 3.5 vs. 24.6 ± 3.6, P = 0.33). The overall complication rate was 5.8% (14/242), primarily comprising surgical site infections (3.5%, 8/242: 1.2% superficial, 2.1% deep), fixation failure (1.2%, 3/242), and nonunion (0.8%, 2/242). Notably, soft tissue irritation occurred exclusively in the TB group (8.8%, 11/125 vs. 0% in SVW; P = 0.005).

conclusionThe SVW technique significantly reduces the risk of patella baja and improves knee range of motion by optimizing vertical tension distribution, establishing it as a biomechanically superior fixation strategy for AO/OTA A1 inferior pole patellar fractures. These findings support SVW as a first-line treatment for such complex injuries.

Indexed as

Bone WiresFracture Fixation, InternalFractures, BonePatellaPostoperative ComplicationsAdultCohort StudiesFemaleHumansMaleMiddle AgedProspective StudiesRange of Motion, ArticularRecovery of FunctionTreatment OutcomeYoung AdultConventional tension bandFunctional outcomesInferior pole patellar fracturePatella BajaSeparate vertical wiring

Identifiers

PMID40405220
PMCPMC12096619

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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.