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Quality Assessment of Prospective Cohort Studies Evaluating Arthroscopic Treatment for Femoroacetabular Impingement Syndrome: A Systematic Review

Review article
Authors Axel Öhlin
Louise Karlsson
Eric Hamrin Senorski
P. Jonasson
Mattias Ahldén
Adad Baranto
O. R. Ayeni
Mikael Sansone
Published in Orthopaedic Journal of Sports Medicine
Volume 7
Issue 5
ISSN 2325-9671
Publication year 2019
Published at Institute of Neuroscience and Physiology, Department of Health and Rehabilitation
Institute of Clinical Sciences, Department of Orthopaedics
Language en
Links dx.doi.org/10.1177/2325967119838533
Keywords cam, pincer, prospective, MINORS, reported hip function, mean follow-up, labral repair, outcomes, surgery, osteoarthritis, management, registry, dislocation, agreement
Subject categories Orthopedics

Abstract

Background: Femoroacetabular impingement (FAI) syndrome is a cause of pain and reduced range of motion in the hip joint. Given the limited number of randomized controlled trials, prospective cohort studies constitute the dominant part of the available prospective evidence evaluating relevant clinical outcomes after arthroscopic hip surgery for FAI. Purpose: To assess the methodological quality of prospective cohort studies evaluating arthroscopic surgery for FAI and to determine whether there has been an improvement in methodological quality over time. Study Design: Systematic review; Level of evidence, 4. Methods: A systematic literature search was performed in PubMed, Embase (OvidSP), and the Cochrane Library. Included studies were clinical prospective cohort studies of primary arthroscopic surgery for cam and/or pincer morphology FAI. Methodological quality was assessed with the Methodological Index for Non-randomized Studies (MINORS). The mean MINORS score for studies published during the first 5 years of the period was compared with those published during the last 5 years to evaluate methodological improvement over time. The methodological quality of randomized controlled trials was also assessed with the Coleman Methodology Score. Results: The search yielded 53 studies. There were 34 noncomparative studies, 15 nonrandomized comparative studies, and 4 randomized controlled trials. The included studies were published between 2008 and 2017. The mean +/- SD MINORS score for noncomparative and comparative studies was 10.4 +/- 1.4 of 16 possible and 18.7 +/- 2.0 of 24 possible, respectively. The mean Coleman Methodology Score for randomized controlled trials was 79.0 +/- 7.0 of 100 possible. Conclusion: The methodological quality of prospective cohort studies evaluating arthroscopic surgery for FAI is moderate for comparative and noncomparative studies. Common areas for improvement include unbiased assessment of study endpoints and prospective sample-size calculations. Despite an increase in the number of published studies, an improvement in methodological quality over time was not observed.

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