The Relation Between Sacral Angle and Vertical Angle of Sacral Curvature and Lumbar Disc Degeneration: A Case-Control Study.

The purpose of this study is to determine the reliability and validity of a goniometric measurement of the vertical angle of the sacrum and sacral angle (SA), and their relationships to lumbar degeneration.A herniated lumbar disc is one of the most frequent medical issues. Investigators in a number of studies have reported associated risk factors for prevalent disc degeneration.