Patellar Tendinopathy And Potential Risk Factors: An International Database Of Cases And Controls

Sarah Morton, Sean Williams, Xavier Valle, David Cueli, Peter Malliaras, Dylan Morrissey

Research output: Contribution to conferencePosterpeer-review

Abstract

Introduction Numerous risk factors have been identified for patellar tendinopathy (PT), often in small population studies. The aim was to use an online questionnaire internationally to generate a large database and identify significant risk factors.Material and Methods Subjects were recruited from England, Spain and Italy with the questionnaire available in all three languages, with the questionnaire previously having been validated by Morton et al. (2014) as to be suitable for self-administration. The questionnaire can be viewed at: http://patellartendinopathyquestionnaire.blogspot.co.uk/ (English), http://tendinopatiarotuliana.blogspot.co.uk/ (Spanish) and http://tendinopatiarotulea.blogspot.co.uk/ (Italian). All data was anonymised and password protected. 825 data sets were collected with 23.4% having clinically diagnosed PT.ResultsEight risk factors were included in the analysis based on a purposeful selection procedure: gender, hours of training, hamstring flexibility, previous patellar tendon rupture, previous knee injury, current/previous back pain, family history and age. To be female was found to be positively associated with PT, suggesting being female is protective (odds ratio (OR)=0.70, 95% CI: 0.49-1.00, p=0.05). As hours of training increased the association with PT became stronger so that training >20 hours a week had a very significant OR of 8.94 (95%CI: 4.68-17.08, p<0.05), the most significant OR calculated. There was an association between a previous knee injury and PT (OR=2.10, 95% CI: 1.45-3.04, p<0.05) and having self-reported flexible hamstrings suggested some protection from PT (OR=0.61, 95% CI0.38-0.97, p=0.04). There was a trend towards association for back pain (OR=1.45, 95% CI: 0.99-2.14, p=0.06) and a family history of tendon problems (OR=1.51, 95% CI: 0.96-2.37, p=0.08). Conclusion Risk factors have been identified that are potentially modifiable in order to inform prevention and rehabilitation programmes; future research is required to establish causal relationships. Certain risk factors require investigation as they are not currently recognised in the literature.
Original languageEnglish
Publication statusPublished - 2015
EventVII Muscletech Network and the IV Congress of the European College of Sport & Exercise Physicians - Spain, Barcelona, UK United Kingdom
Duration: 7 Oct 20159 Oct 2015

Conference

ConferenceVII Muscletech Network and the IV Congress of the European College of Sport & Exercise Physicians
CountryUK United Kingdom
CityBarcelona
Period7/10/159/10/15

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