Objectives To identify the population prevalence of posterior heel pain (PostHP), related disability, and associated factors.
Methods 9334 adults ≥50 years were mailed a questionnaire. Participants reporting foot pain in the last month shaded foot pain location on a manikin. The Manchester Foot Pain and Disability Index assessed disabling foot pain. Population prevalences of any, bilateral, and disabling PostHP were estimated using weighted logistic regression accounting for non-response. Odds ratios (OR) and 95% confidence intervals (95% CI) were calculated between PostHP and age, sex, neighbourhood deprivation, occupational class (professional/intermediate/manual), body mass index (BMI), physical activity, heel height, and diabetes.
Results 5109 questionnaires were received (response 56%). 675 respondents (13%) reported PostHP, of whom 382 had bilateral symptoms. 398 (8%) reported disabling PostHP. PostHP in either foot associated with increasing BMI (25.0-29.9 OR 1.58; 30.0-34.9 2.13; ≥35.0 4.09) and manual occupations (1.96; 95% CI 1.47, 2.62). Bilateral PostHP associated with increasing BMI (25.0-29.9 1.79; 30.0-34.9 2.43; ≥35.0 5.79), diabetes (1.48; 1.07, 2.05), and manual occupations (2.21; 1.48, 3.30). Disabling PostHP associated with increasing BMI (25.0-29.9 1.44; 30.0-34.9 2.50; ≥35.0 4.69), age (aged ≥75 1.41; 1.01, 1.96), manual occupations (1.97; 1.35, 2.88), and diabetes (1.56; 1.04, 1.95). High physical activity was negatively associated with PostHP in either heel (0.43; 0.33, 0.56), bilateral PostHP (0.35; 0.25, 0.49), and disabling PostHP (0.33; 0.23, 0.46).
Conclusion PostHP is prevalent and associated with obesity, manual occupations and physical inactivity. Prospective studies should assess the roles of obesity in causation and weight loss in treatment.
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