Musculoskeletal pain of the bone, joint and muscles is one of the most common reasons for primary care visits in the United States. According to a literature review appearing in a recent issue of the Journal of the American Academy of Orthopaedic Surgeons (JAAOS), chronic pain, or pain that persists beyond an expected period of healing, is estimated to affect 100 million Americans. The majority of chronic pain complaints concern the musculoskeletal system, but they also include headaches and abdominal pain.

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