Factors associated with magnetic resonance imaging defined patellar tendinopathy in community-based middle-aged women: a prospective cohort study

BMC Musculoskeletal Disorders

Yuanyuan Wang¹  Fahad Hanna¹  Robin J. Bell²  Susan R. Davis²  Jill Cook³  Flavia M. Cicuttini¹  Jessica Fairley¹  Jason Toppi¹ 

[1] Department of Epidemiology and Preventive Medicine, Monash University, Alfred Hospital, Melbourne 3004, VIC, Australia;Women’s Health Research Program, School of Public Health and Preventive Medicine, Monash University, Alfred Hospital, Melbourne 3004, VIC, Australia;Department of Physiotherapy, School of Primary Health Care, Faculty of Medicine, Nursing and Health Sciences, Monash University, Frankston 3199, VIC, Australia

关键词: Magnetic resonance imaging;    Vastus medialis;    Physical activity;    Patellar tendinopathy;   

Others  :  1227700
DOI  :  10.1186/s12891-015-0645-8

 received in 2014-11-06, accepted in 2015-07-24,  发布年份 2015

【 摘 要 】

Background

Patellar tendinopathy identified by imaging modalities has been reported in asymptomatic athletes and associated with tendon-related symptoms. However there is little data in community-based populations. The aim of this cohort study was to examine the prevalence of magnetic resonance imaging (MRI) defined patellar tendinopathy, the factors associated with this condition, and whether it was associated with knee pain in community-based middle-aged women.

Methods

One hundred seventy six women, aged 40–67 years, with no significant knee pain or injury underwent knee MRI. Patellar tendinopathy was defined on both T1- and T2-weighted fat-saturated MRIs. The cross-sectional area of vastus medialis was measured from MRI. Height and weight were measured to calculate body mass index (BMI). Physical activity was assessed using a questionnaire. Knee pain was assessed using the Western Ontario and McMaster University Osteoarthritis Index.

Results

The prevalence of MRI defined patellar tendinopathy was 30.1 %. Higher levels of physical activity (odds ratio 1.65, 95 % CI 1.09–2.51) and greater vastus medialis cross-sectional area (odds ratio 1.22, 95 % CI 1.04–1.43) were associated with increased prevalence of patellar tendinopathy, independent of age and BMI. The persistence of patellar tendinopathy was associated with the worsening of knee pain over 2 years (odds ratio 10.65, 95 % CI 1.14–99.77).

Conclusion

In community-based middle-aged women MRI-diagnosed patellar tendinopathy is common, with higher levels of physical activity and greater vastus medialis size being risk factors suggesting a biomechanical effect. Persistent patellar tendinopathy is associated with worsening of knee pain. These findings suggest that further work is needed to determine the contribution of patellar tendinopathy on knee pain and function in older people.

【 授权许可】

   
2015 Toppi et al.

【 图 表 】

Fig. 1.

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