Kyphosis is an excessive curvature of the thoracic spine, causing a pronounced hunched or stooped appearance. This condition is particularly common among older adults and can be caused by multiple factors such as poor posture, age-related changes, vertebral fractures, or degenerative diseases such as osteoporosis. In younger people, kyphosis may be caused by Scheuermann’s disease, which causes uneven growth of the vertebrae, resulting in a wedge-shaped deformity.