Which condition is associated with an excessive inward curvature of the spine?

The condition associated with an excessive inward curvature of the spine is known as lordosis. This curvature can be described as an exaggerated anterior curve of the lumbar spine, leading to a forward tilt of the pelvis and potentially causing discomfort or postural issues. It often occurs in the lumbar region and can be influenced by factors such as obesity, pregnancy, or muscle imbalances.

In contrast, scoliosis refers to a lateral curvature of the spine, typically presenting as an "S" or "C" shape when viewed from the back. Kyphosis describes an excessive outward curvature of the thoracic spine, often leading to a hunchbacked appearance. Flatback syndrome is characterized by a loss of normal lumbar lordosis, resulting in a flat appearance of the lower back. Each of these conditions has distinct characteristics and implications for spinal health and posture.