Follow-up for the complications of osteoporosis as they affect the spine. Mrs. Smith had a 6 mo. history of progressive disabling back pain visibly associated with progressive kyphotic deformity of the thoracolumbar spine, with an attendant cervical lordosis. X-rays of the thoracic spine reveal a compression fracture of T11 and L1. I advised the patient that such fractures, even without trauma, may be complications of underlying osteoporosis as severe as hers.