Evidence map›Paper›PMID 33108849›Full record

ArticleAsian spine journal2021

Symptomatic Construct Failure after Metastatic Spine Tumor Surgery.

Naresh Kumar, Ravish Patel, Jiong Hao Tan, Joshua Song, Naveen Pandita, Dennis Hwee Weng Hey, Leok Lim Lau, Gabriel Liu, Joseph Thambiah, Hee-Kit Wong

Open access · diamondAbstract read
In one paragraph

Article in Asian spine journal, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
1.2field-weighted citation impact, top 20% 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, 12 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Implant and construct decision-making in metastatic spine tumour surgery: a review of current concepts with a decision-making algorithm.European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2024
    Review
  5. Article
  6. Design and 3D printing of novel titanium spine rods with lower flexural modulus and stiffness profile with optimised imaging compatibility.European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2023
    Article
  7. Article
  8. 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

10 authors at 1 institution in 1 country.

Naresh KumarDepartment of Orthopaedic Surgery, National University Health System, Singapore.
Ravish PatelDepartment of Orthopaedic Surgery, National University Health System, Singapore.
Jiong Hao TanDepartment of Orthopaedic Surgery, National University Health System, Singapore.
Joshua SongDepartment of Orthopaedic Surgery, National University Health System, Singapore.
Naveen PanditaDepartment of Orthopaedic Surgery, National University Health System, Singapore.
Dennis Hwee Weng HeyDepartment of Orthopaedic Surgery, National University Health System, Singapore.
Leok Lim LauDepartment of Orthopaedic Surgery, National University Health System, Singapore.
Gabriel LiuDepartment of Orthopaedic Surgery, National University Health System, Singapore.
Joseph ThambiahDepartment of Orthopaedic Surgery, National University Health System, Singapore.
Hee-Kit WongDepartment of Orthopaedic Surgery, National University Health System, Singapore.
National University Health System · SG

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

STUDY

designRetrospective cohort study. PURPOSE: To evaluate the incidence and presentation of symptomatic failures (SFs) after metastatic spine tumor surgery (MSTS). To identify the associated risk factors. To categorize SFs based on the management in these patients. OVERVIEW OF LITERATURE: Few studies have reported on the incidence (1.9%-16%) and risk factors of SF after MSTS. It is unclear whether all SFs, occurring in MSTS-patients, result in revision surgery.

methodsWe conducted a retrospective analysis on 288 patients (246 for final analysis) who underwent MSTS between 2005-2015. Data collected were demographics and peri/postoperative clinical and radiological features. Early and late radiological SF were defined as presentation before and after 3 months from index surgery, respectively. Univariate and multivariate models of competing risk regression analysis were designed to determine the risk factors for SF with death as a competing event.

resultsWe observed 14 SFs (5.7%) in 246 patients; 10 (4.1%) underwent revision surgery. Median survival was 13.4 months. The mean age was 58.8 years (range, 21-87 years); 48.4% were women. The median time to failure was 5 months (range, 1-60 months). Patients with SF were categorized into three groups: (1) SF when the primary implant was revised (n=5, 35.7%); (2) peri-construct progression of disease requiring extension (n=5, 35.7%); and (3) SFs that did not warrant revision (n=4, 28.5%). Four patients (28.5%) presented with early failure. SF commonly occurred at the implant-bone interface (9/14) and all patients had a spinal instability neoplastic score (SINS) >7. Thirteen patients (92.8%) who developed failure had fixation spanning junctional regions. Multivariate competing risk regression showed that preoperative Eastern Cooperative Oncology Group score was a significant risk factor for implant failure (adjusted sub-hazard ratio, 7.0; 95% confidence interval, 1.63-30.07; p<0.0009).

conclusionsThe incidence of SF (5.7%) was low in patients undergoing MSTS although these patients did not undergo spinal fusion. Preoperative ambulators involved a 7 times higher risk of failure than non-ambulators. Preoperative SINS >7 and fixations spanning junctional regions were associated with SF. Majority of construct failures occurred at the implant-bone interface.

Indexed as

Implant failureImplants, ArtificialNeoplasm metastasisSpineSurgery

Identifiers

PMID33108849
PMCPMC8377214
OpenAlexW3096905196

What OpenQuestion holds

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LicenceCC BY-NC
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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.