In the human body, 206 bones work with more than 600 muscles to provide structure, mobility, and protection.

"Discusses the parts that make up the human skeletal system, what can go wrong, how to treat those illnesses and diseases, and how to stay healthy"--Provided by

Back pain is the most common cause of job-related disability. This is a reference to these parts of the body and the ailments of sufferers. It provides informat

Arthritis is the number one cause of disability in the U.S. with more than 40 million people diagnosed; that number is expected to rise as baby boomers continue

Discusses osteoporosis and its effects on people and society.