Final answer:
Osteoporosis is a chronic metabolic disease that weakens and deforms bones, making them prone to fractures. It commonly affects older adults and can be a result of decreased bone density.
Step-by-step explanation:
Osteoporosis is a chronic metabolic disease of the bone characterized by weakened, deformed, and thickened bone that fractures easily. In severe cases, thick, soft bone may be marked by bowing and fractures. Osteoporosis is a disorder that generally occurs in older adults, in which bones lose minerals, become brittle, and break easily. It is the most common cause of broken bones in the elderly. Osteogenesis imperfecta, also known as brittle bone disease, is another disorder characterized by bones that easily bend or fracture due to insufficient production of good quality collagen.