Evidence map›Paper›PMID 31281176›Full record

ArticleAsian spine journal2019

Kyphosis Progression after Balloon Kyphoplasty Compared with Conservative Treatment.

Keiichiro Iida, Katsumi Harimaya, Kiyoshi Tarukado, Osamu Tono, Yoshihiro Matsumoto, Yasuharu Nakashima

Open access · diamondAbstract read
In one paragraph

Article in Asian spine journal, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 1 pooled it
2.4field-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

13 citing papers in PubMed, 1 synthesis or guideline pooled it, 18 citations in OpenAlex.

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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

6 authors at 2 institutions in 1 country.

Keiichiro IidaDepartment of Orthopaedic Surgery, Kyushu University Beppu Hospital, Beppu, Japan.
Katsumi HarimayaDepartment of Orthopaedic Surgery, Kyushu University Beppu Hospital, Beppu, Japan.
Kiyoshi TarukadoDepartment of Orthopaedic Surgery, Kyushu University Beppu Hospital, Beppu, Japan.
Osamu TonoDepartment of Orthopaedic Surgery, Kyushu University Beppu Hospital, Beppu, Japan.
Yoshihiro MatsumotoDepartment of Orthopaedic Surgery, Faculty of Medical Sciences, Kyushu University, Fukuoka, Japan.
Yasuharu NakashimaDepartment of Orthopaedic Surgery, Faculty of Medical Sciences, Kyushu University, Fukuoka, Japan.
Kyushu University Beppu Hospital · JPKyushu University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

STUDY

designRetrospective cohort study (level of evidence: 4). PURPOSE: To demonstrate the effects of balloon kyphoplasty (BKP) on prevention of kyphosis progression. OVERVIEW OF LITERATURE: Kyphoplasty can correct local kyphosis (fractured vertebra), but its efficacy is attenuated by adjacent fracture and/or disc height reduction with endplate damage. With these attenuating factors incorporated, a comparison between BKP and conservative treatment is necessary to verify the effect of BKP on kyphosis correction.

methodsThis study retrospectively analyzed 129 patients treated conservatively and 95 treated with BKP in our institution. The rate of new adjacent fracture occurrence was determined using Kaplan-Meier analysis. We examined the progression of local kyphosis in patients who underwent lateral X-ray after 1 year. Local kyphosis was measured as an angle between higher end plate of the vertebra above and lower end plate of the vertebra below the fractured vertebra. The comparison included 45 patients treated conservatively and 58 treated with BKP.

resultsThe incidence of new adjacent fracture at 1 year was 7.3% in the conservative treatment group and 23.2% in the BKP group (p<0.001), while the progression of local kyphosis at 1 year was 5.7°±4.7° and 3.2°±4.6°, respectively (p=0.01). Relative to conservative treatment, local kyphosis did not progress after BKP, despite the higher incidence of adjacent fracture. Local kyphosis progressed in cases with adjacent fracture compared with those without adjacent fracture (6.0°±4.3° vs. 2.1°±4.3°, p=0.003), and fractured vertebral instability was found to be a risk factor for adjacent fracture in BKP.

conclusionsCompared with the conservative treatment, BKP suppressed the progression of local kyphosis. However, an adjacent fracture attenuated the BKP correction and was more frequently seen in patients with unstable vertebral fractures.

Indexed as

Adjacent fractureBalloon kyphoplastyLocal kyphosisVertebral fracture

Identifiers

PMID31281176
PMCPMC6894976
OpenAlexW2961912435

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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.