Roentgenographic Analysis of Posture in Spinal OsteoporoticsITOI EIJI MDSpine: July 1991 Original Article: PDF Only Abstract This study was designed to investigate the relationship between postural deformities—including both the spine and lower extremities—and clinical symptoms in spinal osteoporotics. Lateral roentgenographic films of 100 osteoporotic patients taken in a standing position were analyzed. Thoracic kyphosis, a primary deformity of the osteoporotic spine, appeared compensated by the lumbar spine, sacroiliac joint, hip joint, and knee joint, respectively. Low-back pain was highly associated with decreased lumbar lordosis and increased sacropelvic angle, suggesting that the sacroiliac joint was one of the causes of low-back pain. © Lippincott-Raven Publishers.