All told, one out of six Americans - about 43 million - have foot problems, according to the American Academy of Orthopaedic Surgeons.

According to the American Academy of Orthopaedic Surgeons, the knee is the most complex and most often injured joint in the body.

At home, it could have run $36,000 to $50,000, according to the American Academy of Orthopaedic Surgeons.

According to the American Academy of Orthopaedic Surgeons, these joints are responsible for sending nearly 15 million Americans to the doctor every year.

At least 26 states now mandate screening for scoliosis in schools, a practice endorsed by the American Academy of Orthopaedic Surgeons.

The findings were presented at the 75th annual meeting of the American Academy of Orthopaedic Surgeons.

American Academy of Orthopaedic Surgeons, public website.

The study was distributed last week by the American Academy of Orthopaedic Surgeons.

Journal of the American Academy of Orthopaedic Surgeons, 17(1): 3-14.

The American Academy of Orthopaedic Surgeons recommends that a backpack not exceed 20 percent of a child's body weight.