Evidence map›Paper›PMID 34103048›Full record

ArticleJournal of orthopaedic surgery and research2021

Fracture of the inferior pole of the patella: tension band wiring versus transosseous reattachment.

Chih-Hsun Chang, Hao-Chun Chuang, Wei-Ren Su, Fa-Chuan Kuan, Chih-Kai Hong, Kai-Lan Hsu

Open access · goldAbstract read
In one paragraph

Article in Journal of orthopaedic surgery and research, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 1 pooled it
2.1field-weighted citation impact, top 13% 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

22 citing papers in PubMed, 1 synthesis or guideline pooled it, 38 citations in OpenAlex.

  1. Pooled it
  2. [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
    Article
  3. Transosseous sutures versus vertical cerclage wire for distal pole patellar fractures: a retrospective comparative cohort study.European journal of trauma and emergency surgery : official publication of the European Trauma Society · 2026
    Article
  4. Article
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  8. Article
  9. Review
  10. Alteration of Insall-Salvati ratio is associated with complications following fixation of patella fractures.European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 2025
    Article
  11. Article
  12. Article
  13. Article
  14. Observational
  15. Article
  16. Patella Fracture Fixation Technique with Suture Anchors.Journal of orthopaedic case reports · 2024
    Article
  17. Article
  18. Article
  19. Review
  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 1 institution in 1 country.

Chih-Hsun ChangDepartment of Orthopaedic Surgery, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, 138 Sheng-Li Rd., Tainan, Taiwan, Republic of China.
Hao-Chun ChuangDepartment of Orthopaedic Surgery, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, 138 Sheng-Li Rd., Tainan, Taiwan, Republic of China.
Wei-Ren SuDepartment of Orthopaedic Surgery, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, 138 Sheng-Li Rd., Tainan, Taiwan, Republic of China.
Fa-Chuan KuanDepartment of Orthopaedic Surgery, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, 138 Sheng-Li Rd., Tainan, Taiwan, Republic of China.
Chih-Kai HongDepartment of Orthopaedic Surgery, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, 138 Sheng-Li Rd., Tainan, Taiwan, Republic of China.
Kai-Lan HsuDepartment of Orthopaedic Surgery, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, 138 Sheng-Li Rd., Tainan, Taiwan, Republic of China. dulendulen@gmail.com.ORCID http://orcid.org/0000-0002-7576-2486
National Cheng Kung University Hospital · TW

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe optimal surgical technique for the fixation of inferior pole patellar fracture remains controversial. The aims of this study were (1) to compare clinical and radiological outcomes following fixation of inferior pole patellar fracture by using tension band wire (TBW) and transosseous reattachment (TOR) without excision of the bony fragment and (2) to determine the risk factors for postoperative radiological loss of reduction.

methodsFor this retrospective cohort study, consecutive patients with inferior pole patellar fracture between January 2010 and December 2017 were recruited. The patients were grouped according to their fixation method (TBW or TOR), and demographic data, clinical outcomes, and postoperative Insall-Salvati (IS) ratio were analyzed. Then, the patients were grouped according to radiological loss of reduction, the possible risk factors for loss of reduction were identified, and odds ratios were calculated.

resultThis study included 55 patients with inferior pole patellar fracture; 30 patients were treated using TBW and 25 were treated using TOR. Clinical failure occurred in two patients in the TBW group (7%) and three in the TOR group (12%). The rate of radiological loss of reduction was significant higher in the TOR group, whereas removal of implants was significantly more common in the TBW group. Patella baja was noted immediately after surgery in the TOR group, but the IS ratios of the two groups were similar after 3 months. Fracture displacement of more than 30 mm was the only independent risk factor for postoperative radiological loss of reduction.

conclusionFor treating inferior pole patellar fracture, both TWB and TOR were effective and had a low clinical failure rate. In 60% of patients undergoing TBW fixation, however, additional surgery was required to remove the implants. Patella baja occurred immediately following TOR, but the patellar height was similar to that in the TBW group after 3 months. Surgeons should be aware of the high risk of postoperative radiological loss of reduction, especially when the fracture displacement is more than 30 mm.

Indexed as

Bone WiresAdultFemaleFracture Fixation, InternalFractures, BoneHumansMaleMiddle AgedPatellaRadiographyRetrospective StudiesRisk FactorsInferior polePatellar fractureTension band wireTransosseous reattachment

Identifiers

PMID34103048
PMCPMC8185944
OpenAlexW3166377696

What OpenQuestion holds

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LicenceCC BY
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.