Evidence map›Paper›PMID 39734224›Full record

ArticleJournal of orthopaedic surgery and research2024

Early therapeutic efficacy of condoliase chemonucleolysis for lumbar disc herniation.

Kazuyoshi Kobayashi, Koji Sato, Yoshinori Morita

Abstract read
In one paragraph

Article in Journal of orthopaedic surgery and research, 2024. 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

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3 · Its place in the literature

Who cites it

5 citing papers in PubMed.

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4 · The record

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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

3 authors.

Kazuyoshi KobayashiDepartment of Orthopaedic Surgery, Japan Red Cross Aichi Medical Center Nagoya Daini Hospital, Myokencho 2-9, Syowa-Ku, Nagoya, Aichi, 466-8650, Japan. k_koba1@f2.dion.ne.jp.
Koji SatoDepartment of Orthopaedic Surgery, Japan Red Cross Aichi Medical Center Nagoya Daini Hospital, Myokencho 2-9, Syowa-Ku, Nagoya, Aichi, 466-8650, Japan.
Yoshinori MoritaDepartment of Orthopaedic Surgery, Japan Red Cross Aichi Medical Center Nagoya Daini Hospital, Myokencho 2-9, Syowa-Ku, Nagoya, Aichi, 466-8650, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundLow back pain is often caused by lumbar disc herniation (LDH). Treatment of LDH is possible using chemonucleolysis of the nucleus pulposus with condoliase injection. However, onset of the therapeutic effect varies among patients, with improvement from an early stage to 3 months post-injection. This study was performed to identify the characteristics of early responders to condoliase therapy.

methodsA retrospective cohort study was performed in 371 consecutive patients (259 males, 112 females; age, 49.9 ± 18.7 years; follow-up period, 13.1 ± 7.4 months) treated with condoliase injection for LDH between August 2018 and January 2024. Chemonucleolysis was performed with 1 mL of condoliase (1.25 U/mL) injected into the intervertebral nucleus pulposus. Clinical assessments were made before injection and 1 day, and 1, 4 and 12 weeks post-injection. Pain was measured on a visual analogue scale. Herniation parameters were evaluated on axial MRI. The herniated disc volume was measured on plain lumbar radiography. Demographic and clinical data were taken from medical charts. Multivariate logistic regression analysis was used to identify factors with independent relationships with treatment efficacy.

resultsImprovement of leg pain from baseline by ≥ 50% occurred in 21% of cases within one day after condoliase treatment. Patients with this improvement at 1 week post-injection were defined as early responders (n = 142, 38.3%). In multivariate analysis, age < 40 years (p = 0.022, odds ratio (OR): 1.71, 95% confidence interval (CI): 1.12-4.35), Pfirrmann Grade II or III at baseline (p = 0.032, OR: 1.86, 95% CI: 1.17-5.41), and a high intensity MRI signal in the herniation (p = 0.041, OR: 1.87, 95% CI: 1.06-5.27) were significantly associated with early improvement. No patients had anaphylactic shock or neurologic sequelae.

conclusionsThis study confirms the safety and efficacy of chemonucleolysis with condoliase for treating patients with painful LDH. Age, high-intensity MRI signals, and baseline Pfirrmann grade were significant factors associated with early improvement.

Indexed as

Intervertebral Disc ChemolysisIntervertebral Disc DisplacementLumbar VertebraeAdultAgedChymopapainCohort StudiesFemaleFollow-Up StudiesHumansLow Back PainMaleMiddle AgedNucleus PulposusRetrospective StudiesTime FactorsChymopapainChemonucleolysisCondoliaseEarly therapeutic efficacyLeg painLow back painLumbar disc herniation

Identifiers

PMID39734224
PMCPMC11684254

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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.