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The Incidence of Plantar Fasciitis in the United States Military
Captain Danielle L. Scher, MD1; Lieutenant Colonel Philip J. BelmontJr., MD1; Major Russell Bear, DO1; Sally B. Mountcastle, PhD2; Justin D. Orr, MD1; Major Brett D. Owens, MD3
1 Division of Orthopaedic Surgery, Department of Surgery, William Beaumont Army Medical Center, 5005 North Piedras Street, El Paso, TX 79920
2 Department of Health Promotion, University of Texas El Paso, 1101 North Campbell Street, El Paso, TX 79968
3 Keller Army Hospital, 900 Washington Road, West Point, NY 10996. E-mail address: b.owens@us.army.mil
View Disclosures and Other Information
Disclosure: The authors did not receive any outside funding or grants in support of their research for or preparation of this work. Neither they nor a member of their immediate families received payments or other benefits or a commitment or agreement to provide such benefits from a commercial entity.
Disclaimer: The opinions or assertions contained herein are the private views of the authors and are not to be construed as official or reflecting the views of the Department of Defense or United States government. The authors are employees of the U.S. government. No funding was received for this study.
Investigation performed at the Division of Orthopaedic Surgery, William Beaumont Army Medical Center, El Paso, Texas

The Journal of Bone and Joint Surgery, Inc.
J Bone Joint Surg Am, 2009 Dec 01;91(12):2867-2872. doi: 10.2106/JBJS.I.00257
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Abstract

Background: Although plantar fasciitis is the most common cause of heel pain, little has been reported on the incidence rates of this disorder. We sought to determine the incidence rate and demographic risk factors of plantar fasciitis in an ethnically diverse and physically active population of United States military service members.

Methods: A query was performed with use of the Defense Medical Epidemiology Database for the International Classification of Diseases, Ninth Revision, Clinical Modification, code for plantar fasciitis (728.71). Multivariate Poisson regression analysis was used to estimate the rate of plantar fasciitis per 1000 person-years, while controlling for sex, race, rank, service, and age.

Results: The overall unadjusted incidence rate of plantar fasciitis was 10.5 per 1000 person-years. Compared with men, women had a significantly increased adjusted incidence rate ratio for plantar fasciitis of 1.96 (95% confidence interval, 1.94 to 1.99). The adjusted incidence rate ratio for black service members compared with white service members was 1.12 (95% confidence interval, 1.09 to 1.12). With junior officers as the referent category, junior enlisted, senior enlisted, and senior officer rank groups had a significantly increased adjusted incidence rate ratio for plantar fasciitis: 1.20 (95% confidence interval, 1.18 to 1.23), 1.19 (95% confidence interval, 1.17 to 1.22), and 1.56 (95% confidence interval, 1.52 to 1.61), respectively. Compared with service members in the Air Force, those in the Army and Marines had a significantly increased adjusted incidence rate ratio for plantar fasciitis of 1.85 (95% confidence interval, 1.82 to 1.87) and 1.28 (95% confidence interval, 1.25 to 1.30), respectively. The adjusted incidence rate ratio for the age group of forty years old or more compared with the twenty to twenty-four-year-old group was 3.42 (95% confidence interval, 3.34 to 3.51).

Conclusions: Female sex; black race; junior enlisted, senior enlisted, and senior officer rank groups; service in the Army or Marines; and increasing age are all risk factors for plantar fasciitis.

Level of Evidence: Prognostic Level II. See Instructions to Authors for a complete description of levels of evidence.

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    Accreditation Statement
    These activities have been planned and implemented in accordance with the Essential Areas and policies of the Accreditation Council for Continuing Medical Education (ACCME) through the joint sponsorship of the American Academy of Orthopaedic Surgeons and The Journal of Bone and Joint Surgery, Inc. The American Academy of Orthopaedic Surgeons is accredited by the ACCME to provide continuing medical education for physicians.
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