Mayo Clinic
Mayo Clinic: Scoliosis
This site from the MayoClinic.com gives excellent information about scoliosis, including a picture, signs of scoliosis, screening information, diagnosis and treatment information, and how scoliosis progresses with treatment.
Other
Spine Anatomy: Abnormal Spine
Check out images and brief descriptions of various spine abnormatlities, including a ruptured disk, scoliosis, spondylolisthesis, snd arthritis.