RT Book, Section A1 Kelsey, Jennifer L. A1 Sowers, MaryFran A2 Wallace, Robert B. SR Print(0) ID 1141961346 T1 Musculoskeletal Disorders T2 Maxcy-Rosenau-Last Public Health and Preventive Medicine, 15e YR 2017 FD 2017 PB McGraw-Hill Medical PP New York, NY SN 9780071441988 LK accessbiomedicalscience.mhmedical.com/content.aspx?aid=1141961346 RD 2024/04/24 AB Musculoskeletal disorders are common, affect all age groups, and are associated with a great deal of disability, impairment, and handicap. More than 12 million people in the United States have their activity limited by musculoskeletal disorders, a figure greater than for any other disease category (Fig. 66-1).1 Musculoskeletal impairments affect about 14% of the population, with the spine most commonly involved, followed by the lower extremity or hip and the upper extremity or shoulder (Table 66-1).2 Each year about 11% of the population in the United States experience a musculoskeletal injury severe enough that medical care is sought or activity is restricted for at least half a day.2 The total economic cost to the United States of musculoskeletal conditions was estimated to be $284 billion in 2000,3 second only to diseases of the circulatory system. Indirect costs from lost earnings and services represent a particularly high proportion of this cost, since many people are affected during their most productive years.