What disease is an abnormal lateral curvature of the spine?

A) rheumatoid arthritis
B) bursitis
C) osteoarthritis
D) osteoporosis
E) scoliosis

Scoliosis is a condition in which there is an abnormal sideways curvature of the spine, usually in an "S" or "C" shape. Rheumatoid arthritis, bursitis, osteoarthritis, and osteoporosis are all conditions that primarily affect the joints and bones but do not cause curvature of the spine.