Eugenie, 30, is "doing really well" after having a C-section due to her previous spinal surgery for scoliosis, a source who has spoken to the new mom since the birth tells PEOPLE in this week's issue.

Scoliosis is a curvature in the spine. Most cases of scoliosis develop just before you reach puberty. In those cases, the cause is not known. However, certain diseases like cerebral palsy or ...

"Degenerative scoliosis is a sideways curve in the spine ... your chest towards the floor while relaxing your head. Hold for ...

Scoliosis, a spinal condition affecting an estimated 7 million people in the U.S., can lead to significant health issues if untreated, according to the National Scoliosis Foundation. Dr. Nicholas ...