Evidence map›Paper›PMID 34178124›Full record

ArticleTherapeutic advances in musculoskeletal disease2021

Intramuscular neridronate for the treatment of complex regional pain syndrome type 1: a randomized, double-blind, placebo-controlled study.

Massimo Varenna, Vania Braga, Davide Gatti, Giovanni Iolascon, Bruno Frediani, Francesca Zucchi, Chiara Crotti, Fabrizio Nannipieri, Maurizio Rossini

Open access · goldAbstract read
In one paragraph

Article in Therapeutic advances in musculoskeletal disease, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed, 1 pooled it
6.1field-weighted citation impact, top 3% 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

24 citing papers in PubMed, 1 synthesis or guideline pooled it, 35 citations in OpenAlex.

  1. Pooled it
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  5. Observational
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  7. Article
  8. Article
  9. Conservative treatments of bone marrow lesions.Journal of experimental orthopaedics · 2025
    Article
  10. 10. Complex regional pain syndrome.Pain practice : the official journal of World Institute of Pain · 2025
    Review
  11. Retrospective Analysis of 28 Cases of Complex Regional Pain Syndrome.Clinical medicine insights. Arthritis and musculoskeletal disorders · 2025
    Article
  12. Review
  13. Article
  14. Observational
  15. Review
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  17. Is CRPS-1 a Chronic Disabling Disease? A Long-term, Real-Life Study on Patients Treated With Neridronate.Clinical medicine insights. Arthritis and musculoskeletal disorders · 2024
    Article
  18. Review
  19. Article
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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

9 authors at 5 institutions in 1 country.

Massimo VarennaBone Diseases Unit, Department of Rheumatology, Gaetano Pini Institute, Via Pini, 9, Milan 20122, Italy.ORCID https://orcid.org/0000-0002-8644-0909
Vania BragaULSS 9, Verona, Italy.
Davide GattiRheumatology Unit, Department of Medicine, University of Verona, Verona, Veneto, Italy.
Giovanni IolasconDepartment of Medical and Surgical Specialties, University of Campania "Luigi Vanvitelli", Naples, Italy.
Bruno FredianiUnit of Rheumatology, University of Siena, Siena, Toscana, Italy.
Francesca ZucchiBone Diseases Unit, Department of Rheumatology, Gaetano Pini Institute, Milan, Italy.
Chiara CrottiBone Diseases Unit, Department of Rheumatology, Gaetano Pini Institute, Milan, Italy.ORCID https://orcid.org/0000-0001-7015-269X
Fabrizio NannipieriClinical Research, Abiogen Pharma, Pisa, Toscana, Italy.
Maurizio RossiniRheumatology Unit, Department of Medicine, University of Verona, Verona, Veneto, Italy.ORCID https://orcid.org/0000-0001-9692-2293
Istituto Ortopedico Gaetano Pini · ITUniversity of Verona · ITAbiogen Pharma (Italy) · ITUniversity of Campania "Luigi Vanvitelli" · ITUniversity of Siena · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundComplex regional pain syndrome type-1 (CRPS-1) is a severely disabling painful disease challenging to treat. This multicenter, randomized, double-blind placebo-controlled trial examined the efficacy of intramuscular (i.m.) neridronate in CRPS-1 patients.

methodsA total of 78 patients diagnosed with CRPS-1 (aged 59.5 ± 10.3, 66.7% female) were randomly assigned to 25 mg (i.m.) neridronate (

resultsAfter 30 days, VAS score decreased significantly to a greater extent in neridronate-treated patients

conclusionIn patients with acute CRPS-1, i.m. injections of 25 mg neridronate were associated with clinically relevant benefit compared with placebo controls.

trial registrationEU Clinical Trials Register: https://www.clinicaltrialsregister.eu/ctr-search/search?query=2014-001156-28.

Indexed as

algodystrophybisphosphonatescomplex regional pain syndrome type 1neridronaterandomized clinical trial

Identifiers

PMID34178124
PMCPMC8202309
OpenAlexW3172062418

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.