______________________ is an abnormal increase in the forward curvature of the lumbar spine.
Lordosis â Abnormal lordosis is an abnormal curvature of the normal curvature of the spine. This can occur when the lumbar and cervical curvatures are over-pronounced, and can cause extreme pain or discomfort. Lordosis itself can refer to either normal or abnormal curvature of the spine. Scoliosis â Scoliosis is the complete abnormality of the curvature of the spine. With this condition, the spine curves from side to side, often resulting in unbalanced posture and muscle development.