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Open Access

Expression of Concern

Expression of Concern: Direct anterior approach (DAA) vs. conventional approaches in total hip arthroplasty: A RCT meta-analysis with an overview of related meta-analyses

  • The PLOS ONE Editors

After publication of this article [1], concerns were raised about possible redundant publication across a group of closely related publications [1–7].

PLOS investigated this matter and confirmed that the articles published in [1] and [2] addressed the same primary research question and were submitted within a short time of one another. The PLOS ONE article [1] was published before the Scientific Reports article [2].

Studies [3, 6–7] and the studies published previously in [4–5] addressed closely related research questions but included a different treatment group than [1, 2] and in the case of [3, 5–7] used a different methodology.

The following issues were noted with regards to [1] and [2]:

  • The two articles referenced the same PROSPERO protocol and reported largely overlapping studies and results, with the exception that [2] included an additional study.
  • According to [2], an updated literature search was performed before the submission of article [1]. It is not clear why the updated dataset was not included in [1].
  • Despite the overlap between [1, 2], the articles report different conclusions regarding the relative outcomes of THA through DAA compared to THA through CAs. Although this could be explained by effects of the additional study included in [2], this discrepancy raises concerns about the reliability and robustness of the PLOS ONE article’s [1] conclusion.
  • As a closely related study, the submission of article [2] was not declared during the submission of article [1] as is required by PLOS’ Policy on Submission and Publication of Related Studies.

In light of these concerns, the PLOS ONE Editors issue this Expression of Concern.

References

  1. 1. Lazaru P, Bueschges S, Ramadanov N (2021) Direct anterior approach (DAA) vs. conventional approaches in total hip arthroplasty: A RCT meta-analysis with an overview of related meta-analyses. PLoS ONE 16(8): e0255888. https://doi.org/10.1371/journal.pone.0255888 pmid:34428236
  2. 2. Ramadanov N., Bueschges S., Lazaru P. . A meta-analysis on RCTs of direct anterior and conventional approaches in total hip arthroplasty. Sci Rep 11, 20991 (2021). https://doi.org/10.1038/s41598-021-00405-4 pmid:34697357
  3. 3. Ramadanov Nikolai, Bueschges Simon, Liu Kuiliang, Lazaru Philip, Marintschev Ivan, Direct anterior approach vs. SuperPATH vs. conventional approaches in total hip replacement: A network meta-analysis of randomized controlled trials, Orthopaedics & Traumatology: Surgery & Research, Volume 107, Issue 8, 2021, 103058, ISSN 1877-0568, https://doi.org/10.1016/j.otsr.2021.103058
  4. 4. Ramadanov N., Bueschges S., Liu K. et al. Comparison of short-term outcomes between SuperPATH approach and conventional approaches in hip replacement: a systematic review and meta-analysis of randomized controlled trials. J Orthop Surg Res 15, 420 (2020). https://doi.org/10.1186/s13018-020-01884-3 pmid:32943082
  5. 5. Ramadanov N., Bueschges S., Liu K. et al. Comparison of short-term outcomes between direct anterior approach (DAA) and SuperPATH in total hip replacement: a systematic review and network meta-analysis of randomized controlled trials. J Orthop Surg Res 16, 324 (2021). https://doi.org/10.1186/s13018-021-02315-7
  6. 6. Ramadanov N. An Updated Meta-Analysis of Randomized Controlled Trials on Total Hip Arthroplasty through SuperPATH versus Conventional Approaches. Orthop Surg. 2022 May;14(5):807–823. pmid:35332682
  7. 7. Ramadanov N., Bueschges S., Liu K. et al. Direct and indirect comparisons in network meta-analysis of SuperPATH, direct anterior and posterior approaches in total hip arthroplasty. Sci Rep 12, 16778 (2022). https://doi.org/10.1038/s41598-022-20242-3 pmid:36202828

Citation: The PLOS ONE Editors (2023) Expression of Concern: Direct anterior approach (DAA) vs. conventional approaches in total hip arthroplasty: A RCT meta-analysis with an overview of related meta-analyses. PLoS ONE 18(3): e0283509. https://doi.org/10.1371/journal.pone.0283509

Published: March 20, 2023

Copyright: © 2023 The PLOS ONE Editors. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.