What disorder is characterized by abnormal growth of the thoracic spine leading to exaggerated kyphosis?

Scheuermann's Disease is characterized by abnormal growth of the thoracic spine, which leads to an exaggerated kyphotic curvature. This condition typically manifests during adolescence and results from the wedging of the vertebrae. In affected individuals, the anterior portion of the thoracic vertebrae has a more pronounced divergence compared to the posterior aspect, resulting in a forward curve of the spine. This deformity can cause both physical discomfort and aesthetic concerns, leading to a potential impact on the individual's quality of life.

The condition is specifically associated with changes in the spine's structure rather than other skeletal disorders, making it uniquely identifiable among the options presented. The other choices refer to different orthopedic issues: Osteogenesis Imperfecta involves fragile bones, Blount's Disease pertains to bowing of the legs, and Leg-Calve-Perthes Disease affects the hip joint. Each of these has distinct etiologies and clinical manifestations that do not involve the characteristic spinal abnormalities seen in Scheuermann's Disease.