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Vol. 22. Num. 6.01 November 2018
Pages 435-526
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Vol. 22. Num. 6.01 November 2018
Pages 435-526
Systematic Review
DOI: 10.1016/j.bjpt.2018.03.012
Prevalence of knee osteoarthritis in former athletes: a systematic review with meta-analysis
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Fernanda O. Madalenoa, Bruna A. Santosa, Vanessa L. Araújoa, Vinicius C. Oliveirab, Renan A. Resendea,
Corresponding author
renan.aresende@gmail.com

Corresponding author at: Avenida Antônio Carlos 6627, Pampulha, School of Physical Education, Physical, Therapy and Occupational Therapy, Department of Physical Therapy, Rehabilitation, Sciences Program, Belo Horizonte, Minas Gerais, Brazil.
a Department of Physical Therapy, School of Physical Education, Physical Therapy and Occupational Therapy, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
b Postgraduate Program in Rehabilitation and Functional Performance, Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM), Diamantina, Minas Gerais, Brazil
Highlights

  • Prevalence of knee OA in former athletes was 30.0% (95% CI 20.0 to 40.0%).

  • Low-quality evidence suggests that this is likely to change with high-quality studies.

  • Diagnostic criteria for knee OA and sport modality may impact on estimated prevalence.

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Table 1. Characteristics of the included studies (n=15).
Table 2. Methodological quality of the included studies (n=15).
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Abstract
Background

Prevalence of knee osteoarthritis in former athletes is still unclear.

Objective

To investigate prevalence of knee osteoarthritis in former athletes. Moreover, the secondary aim was to investigate whether poor methodological quality of included studies, different diagnosis criteria for knee osteoarthritis, different sports modality or sex impact on overall estimated prevalence of knee osteoarthritis in former athletes.

Methods

Searches on MEDLINE, EMBASE, AMED, SPORTDiscus and CINAHL from the earliest record to February 2018 and hand-searching identified studies investigating prevalence of knee osteoarthritis in former athletes. Meta-analysis was conducted and the GRADE system summarized strength of the current recommendations. Sensitivity analyses investigated whether methodological quality, diagnostic criteria, type of sports or sex impacted on the overall estimated prevalence in former athletes. This review was registered at PROSPERO (CRD42016050903).

Results

Fifteen studies were included and pooling of 3100 participants estimated overall prevalence of knee osteoarthritis in former athletes of 30.0% (95% CI: 20.0 to 40.0%). The strength of the current recommendations was low-quality. Sensitivity analyses suggested that different diagnostic criteria for knee osteoarthritis and type of sports may impact on the overall estimated prevalence.

Conclusions

Prevalence of knee osteoarthritis in former athletes was 30.0%. Researchers, clinicians and policymakers should be careful about potential prevalence differences among type of sports and diagnostic criteria. Current low-quality evidence shows that future high-quality studies are likely to impact on the estimated prevalence.

Keywords:
Sports
Knee joints
Osteoarthroses
Data pooling

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