Dowager's hump: An abnormal outward curvature of the thoracic vertebrae of the upper back. Compression of the front portion of the involved vertebrae due to osteoporosis leads to forward bending of the spine (kyphosis) and creates a hump at the upper back. Like most osteoporotic changes, it is often preventable.
Quick GuideWhat Is Osteoporosis? Treatment, Symptoms, Medication
Subscribe to MedicineNet's Women's Health Newsletter
Last Editorial Review: 5/13/2016