Original articleGreater Trochanteric Pain Syndrome: Epidemiology and Associated Factors
Section snippets
Participants
The Multicenter Osteoarthritis (MOST) Study is a longitudinal study of persons 50 to 79 years old at a high risk of developing symptomatic knee OA or who already had knee OA. Subjects are drawn from the community. Although the purpose of the MOST study is to assess risk factors for incident and progressive knee OA, the availability of standardized data on GTPS diagnosis and associated features in a large community-based sample makes it a useful resource for analysis. The present report uses
Prevalence of GTPS
A total of 5735 lower limbs from 2954 subjects were eligible for analysis of GTPS (fig 1). The subjects’ mean age ± SD was 62.4±8.1 years, and 60.1% were women. Of these subjects, 517 (17.6%) had GTPS. Specifically, 344 had unilateral and an additional 173 had bilateral GTPS, a prevalence of 11.7% and 5.9%, respectively (table 1). The prevalence of unilateral and bilateral GTPS was 15.0% and 8.5% in women and 6.6% and 1.9% in men. Comparing subjects with and without GTPS, the OR for GTPS in
Discussion
This study was useful in both identifying the prevalence of GTPS in a non-clinic–based population as well as assessing the validity of common teachings regarding GTPS. The GTPS prevalence of 17.6% in this community-based sample of older adults at high risk of knee OA contrasts with the 20% to 35% reported for spine clinic patients presenting with LBP. We found the following were associated with GTPS: female sex, ITB tenderness, knee OA or knee pain, and LBP.
Reasons for the differences in
Conclusions
The higher prevalence of GTPS in people who report hip pain in the absence of knee or generalized pain (24% of women, 9% of men) indicates that GTPS is common, and greater clinical awareness may identify patients for primary prevention and therapy. Slower functional performance in those with GTPS suggests that the study of targeted rehabilitation may be useful to minimize the impact of GTPS. A longitudinal study will be necessary to identify causal factors and outcomes of interventions.
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Supported by the National Institute of Child Health and Human Development, National Institutes of Health (grant no. 5K12HD001097-08) and National Institute on Aging, National Institutes of Health (grant nos. 1 U01 AG18832, 1 U01 AG18820, 1 U01 AG19069, 1 U01 AG18947).
No commercial party having a direct financial interest in the results of the research supporting this article has or will confer a benefit upon the author(s) or upon any organization with which the author(s) is/are associated.