One in every five adults and 300,000 children have a diagnosed arthritic condition—the nation's leading cause of disability.1 The term arthritis covers many different conditions, including osteoarthritis (OA), rheumatoid arthritis, lupus, and fibromyalgia. In the United States arthritis and other rheumatic conditions carry a staggering price tag of $128 billion annually in direct and indirect expenses.2 The most common form of arthritis is OA, a joint disease in which the cartilage thins as a result of injury, inflammation, or age; genetics may also play a role. An estimated 27 million American adults have OA,3 but its consequences can be prevented or alleviated with exercise, weight loss, physical therapy, medications, and other interventions, such as joint replacement.
This article reviews the national initiatives that have been developed to address the burden of OA. Among the organizations developing and implementing them are the Arthritis Foundation (AF) and its partners, which include the Centers for Disease Control and Prevention (CDC), the American College of Rheumatology, the U.S. Bone and Joint Initiative, and the Ad Council.
A PUBLIC HEALTH CRISIS
Some form of arthritis affects 50 million adults in the United States, and the CDC has predicted that that number will increase to 67 million, or 25% of the adult population, by 2030.1 All races and ethnic groups are affected by arthritis, including 36 million white adults, 4.6 million black adults, nearly 3 million Hispanic adults, and 1.6 million adults of other races.4 Of those with arthritis, non-Hispanic blacks and Hispanics report greater work limitations and more severe joint pain than whites do.5 Today 41% of the 50 million U.S. adults with arthritis report limitations in their usual activities because of arthritis.6
Arthritis often affects people who have other chronic diseases, which can make it difficult for them to exercise to improve any of their comorbid conditions. For example, 52% of people with diabetes,7 57% of people with heart disease,8 and 53% of people with hypertension9 have doctor-diagnosed arthritis. Obese people with arthritis are 44% more likely to be physically inactive than are those without it.10
OA: the most common form. OA is a serious, painful, and sometimes life-altering joint disease mainly affecting the hips, knees, and hands. Its symptoms include joint pain, aching, stiffness, and swelling. Weakness and functional impairment from OA can be disabling and can result in joint replacement. OA is caused by a variety of factors, including genetics, mechanical stresses (such as injury), and systemic changes. Key public health facts about OA include the following.
* OA is the most common form of arthritis; the number of people affected is increasing. Murphy and colleagues found a lifetime risk of symptomatic knee OA of almost one in two.11
* OA doesn't affect just older people. A major joint injury can bring on early-onset OA within 10 years.12 Early-onset OA can also result when there are congenital abnormalities.
* OA affects some demographic groups more than others. More women than men have OA at all ages, and it is at least as prevalent among blacks as whites. Obesity or overweight and joint injury from any cause also increase the risk of OA, particularly in the knee.10, 13, 14
U.S. BONE AND JOINT INITIATIVE
In 2000 the U.S. Bone and Joint Decade was initiated nationally and internationally to raise awareness about the burden of musculoskeletal disease. The accomplishments of the decade included
* publishing The Burden of Musculoskeletal Diseases in the United States: Prevalence, Societal and Economic Cost (available online at www.boneandjointburden.org).
* increasing the number of young investigators who have received research funding.
* increasing the formalized instruction of musculoskeletal medicine in medical schools to 80% through Project 100.
* offering public education programs such as Fit to a T (targeting bone health and osteoporosis), PB and J (Protect Your Bones and Joints, designed for adolescents), and Experts in Arthritis (aimed at the public and arthritis patients).
* assembling a community of advocates to increase awareness on Capitol Hill, raising funds for research, and improving access to care.
In 2010 the organization built to support the U.S. Bone and Joint Decade decided to continue its efforts in the next decade as the U.S. Bone and Joint Initiative (see www.usbji.org) and embarked on a new plan focusing on four areas: assessing and disseminating data, improving access to musculoskeletal care, hosting interdisciplinary forums and programs, and increasing awareness and advocacy.
THE ARTHRITIS FOUNDATION AND ITS PARTNERS
The AF is “committed to raising awareness and reducing the impact of this serious, painful and unacceptable disease,” according to its Web site (www.arthritis.org). Through education campaigns and public policy and legislative efforts, the AF seeks a cure for arthritis and is the largest private, nonprofit contributor to arthritis research in the world, providing more than $380 million in research funds since 1948. Since 1975 the AF's public health and policy activities have centered on the programs outlined below.
The National Arthritis Act was passed in 1975 through the efforts of the AF and its partners. It created a long-term national strategy to address arthritis and funded research, training, public education, and treatment.
The National Arthritis Action Plan (NAAP). In 1999 the AF and more than 90 of its partners created this national strategy, one of the United States’ first road maps for a chronic illness. As a blueprint for population-wide efforts to combat arthritis, the NAAP emphasizes four public health approaches: increasing prevention, expanding scientific research, improving social equity, and developing partnerships. (See Table 1.)
The CDC. In 2000 the federal government established an arthritis program at the CDC. It focuses on maintaining surveillance, awarding grants to establish arthritis programs in state health departments (a list is at www.cdc.gov/arthritis), and participating in a cooperative agreement with the AF. In collaboration with the AF, the CDC created public awareness activities in English and Spanish and has implemented evidence-based programs for people with arthritis (see www.arthritis.org/programs.php). These include an arthritis self-management course developed by Stanford University, an aquatic exercise program developed with the Y, and a land-based exercise program. They are offered in CDC-funded states and through the AF's 10 regional affiliates.
The arthritis group at the CDC identifies and collects data on the disease by using the Behavioral Risk Factor Surveillance System, the National Health Interview Survey, and the National Health and Nutrition Examination Survey. It also publishes an annual report during Arthritis Awareness Month in May.
Quality-of-care measures for people with arthritis. Indicators for the treatment of rheumatoid arthritis and OA, including use of analgesics, were developed by the AF. They have been used by the American College of Rheumatology to improve the quality of the care given to people with arthritis. The treatment indicators were submitted to the National Quality Measures Clearinghouse and posted at the end of 2006. (See www.arthritis.org/quality-measurements-oa.php for one example.)
The National Public Health Agenda for Osteoarthritis. In early 2008 the CDC and the AF began to collaboratively seek ways to reduce the public health burden of OA over a three-to-five-year period. More than 75 partners from a variety of disciplines convened in the spring of 2009 at an OA summit, which resulted in The National Public Health Agenda for Osteoarthritis (OA Agenda).15 See Table 2 for its 10 recommendations); for the full document, see www.arthritis.org/osteoarthritis-agenda.
The OA Agenda is directed at “both the public and private sector: federal, state and local governments and policy makers, business and industry, non-profit organizations, foundations, and associations, insurers and healthcare providers, and patient advocacy and community organizations.” All play central roles in furthering the OA Agenda.
Summit participants identified four public health strategies that can reduce pain, functional loss, and disability from OA and improve the quality of life for those with it: self-management education, physical activity, injury prevention, and weight management.
IMPLEMENTING THE OA AGENDA
The OA Agenda was released in February 2010 in tandem with a national Ad Council campaign about OA. It was developed in partnership with the AF and the American College of Rheumatology.
The campaign focused on relating the message that “moving is the best medicine” and sought to create an urgent sense of awareness about OA and compel baby boomers with arthritis to realize that they can take simple steps to change the course of the disease. The ads targeted those ages 55 years and older who were living with or at risk for OA. Physical activity and weight loss were the focuses of the television and radio spots, posters, and outdoor print advertisements. The campaign drove people to the Web site www.fightarthritispain.org, where they could learn about decreasing pain and improving function.
Knee OA screening questionnaire. To help members of the public understand their risk and urge them to take action, the AF financed the development of an evidence-based screening tool for knee OA and posted an abbreviated version of it at www.fightarthritispain.org. The knee was chosen for the questionnaire because risk factors such as obesity play a greater role in the onset and progression of knee OA than in hand and hip OA and because it is the joint that is most commonly replaced by orthopedic surgeons. Kent Kwoh, MD, of the University of Pittsburgh, conducted a study to develop the screening tool for administration on paper or online.16 The research team started by reviewing observational epidemiologic studies on risk factors for the development of radiographic knee OA. They also reviewed existing screening tools and screening questionnaires from two large National Institutes of Health studies: the Health Aging and Body Composition Study and the Osteoarthritis Initiative. These sources were used to identify potential risk factors and create a 42-item questionnaire that elicited patient information on risk factors, frequency and severity of knee pain and related symptoms, and functional impairment.
To validate the questionnaire, it was mailed to selected participants from two of the five clinical centers involved in the Osteoarthritis Initiative. Participants had either no evidence of knee OA or definite radiographic knee OA at baseline. In addition, knee X-rays from each participant's most recent visit were read by an experienced musculoskeletal radiologist to avoid misclassification. The study produced a screening tool for knee OA that could be used in epidemiologic studies and in prevention efforts. After a person completes the questionnaire, an assessment of risk—mild, moderate, or high—and tailored recommendations for discussing the result with her or his physician are given. Data on the number and characteristics of those taking the questionnaire (age group, sex, ethnicity, race, and weight) along with the classification of risk are being collected.
OSTEOARTHRITIS ACTION ALLIANCE
Spearheaded by the AF and the CDC, the Osteoarthritis Action Alliance (www.oaaction.org) is a group of organizations committed to working together to implement the recommendations outlined in the OA Agenda. An inaugural meeting in April 2011 included leaders in the fields of aging, public health, arthritis care, women's and minority health, chronic disease prevention, physical activity, injury prevention, weight management, and consumer affairs. The participants mapped out initial priorities for advancing some of the recommendations detailed in the OA Agenda, including the following:
* working to increase the physical activity levels of people with or at risk for knee or hip OA
* making state and federal policymakers aware of the connection between obesity and increased OA risk and integrating OA into the national policy discussion about obesity prevention and management
* expanding self-management education as a community-based intervention for people with symptomatic OA
* advancing the widespread adoption of rules and policies in organized sports, recreation, and school athletics to prevent joint injuries that can lead to OA
Future initiatives. In addition, the Osteoarthritis Action Alliance formed a physical activity working group that will support the implementation of the Environmental and Policy Strategies to Increase Physical Activity among People with Arthritis report. Some examples of strategies included in the report are having clinicians ask their arthritis patients at every visit about their physical activity levels and screening for arthritis-specific barriers to physical activity. Physical activity can have many benefits for patients with arthritis and other common chronic conditions, but pain and fatigue may prevent activity.17
These environmental and policy strategies could help to expand the public health framework for arthritis by, for example, encouraging changes in physical and social environments that would support activity in adults with arthritis. A report on the group's recommendations will be released in March 2012 (see Table 3 for a summary).
Increasing OA research. As a result of the AF's advocacy efforts, the Congressionally Directed Medical Research Programs at the Department of Defense recently awarded about $1.5 million for OA research. Members of the armed services are 50% more likely than civilians to receive an OA diagnosis.18 As troops are returning home from Iraq and Afghanistan, the AF continues to advocate federal funding of OA research through this program.
1. Centers for Disease Control and Prevention (CDC). . Prevalence of doctor-diagnosed arthritis and arthritis-attributable activity limitation—United States, 2003-2005 MMWR Morb Mortal Wkly Rep. 2006;55(40):1089–92
2. Centers for Disease Control and Prevention (CDC). . National and state medical expenditures and lost earnings attributable to arthritis and other rheumatic conditions—United States, 2003 MMWR Morb Mortal Wkly Rep. 2007;56(1):4–7
3. Lawrence RC, et al. Estimates of the prevalence of arthritis and other rheumatic conditions in the United States. Part II Arthritis Rheum. 2008;58(1):26–35
4. Bolen J, et al. Differences in the prevalence and severity of arthritis among racial/ethnic groups in the United States, National Health Interview Survey, 2002, 2003, and 2006 Prev Chronic Dis. 2010;7(3):A64
5. Centers for Disease Control and Prevention (CDC). . Prevalence of doctor-diagnosed arthritis and arthritis-attributable effects among Hispanic adults, by Hispanic subgroup—United States, 2002, 2003, 2006, and 2009 MMWR Morb Mortal Wkly Rep. 2011;60(6):167–71
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7. Centers for Disease Control and Prevention (CDC). . Arthritis as a potential barrier to physical activity among adults with diabetes—United States, 2005 and 2007 MMWR Morb Mortal Wkly Rep. 2008;57(18):486–9
8. Centers for Disease Control and Prevention (CDC). . Arthritis as a potential barrier to physical activity among adults with heart disease—United States, 2005 and 2007 MMWR Morb Mortal Wkly Rep. 2009;58(7):165–9
9. Murphy L, et al. Comorbidities are very common among people with arthritis [poster 43]. Atlanta: 20th National Conference on Chronic Disease Prevention and Control 2009.
10. Centers for Disease Control and Prevention (CDC). . Arthritis as a potential barrier to physical activity among adults with obesity—United States, 2007 and 2009 MMWR Morb Mortal Wkly Rep. 2011;60(19):614–8
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13. Furner SE, et al. Health-related quality of life of U.S. adults with arthritis: analysis of data from the behavioral risk factor surveillance system, 2003, 2005, and 2007 Arthritis Care Res (Hoboken). 2011;63(6):788–99
14. Centers for Disease Control and Prevention (CDC). . Prevalence of obesity among adults with arthritis—United States, 2003–2009 MMWR Morb Mortal Wkly Rep. 2011;60(16):509–13
15. Lubar D, et al. A national public health agenda for osteoarthritis 2010 Semin Arthritis Rheum. 2010;39(5):323–6
16. Kwoh CK, et al. A screening tool for knee osteoarthritis [abstract] Arthritis Rheum. 2011;63(Suppl 10):S810
17. Wilcox S, et al. Perceived exercise barriers, enablers, and benefits among exercising and nonexercising adults with arthritis: results from a qualitative study Arthritis Rheum. 2006;55(4):616–27
18. Cameron KL, et al. Incidence of physician-diagnosed osteoarthritis among active duty United States military service members Arthritis Rheum. 2011;63(10):2974–82