Whether interior or exterior, sliding barn-style doors require a track and related hardware. Prices are based on the amount of weight the system can hold, size, basic durability, number of tracks (one door or two) and style (interior hardware is often more decorative).
A pathologic fracture is a bone fracture caused by disease that led to weakness of the bone structure. This process is most commonly due to osteoporosis, but may also be due to other pathologies such as: cancer, infection, inherited bone disorders,or a bone cyst.
Pathological aging is the aging process that is brought on by the presence of disease, such as adult-onset diabetes or arthritis, and that may later bring on cardiovascular disease or osteoporosis. This is not considered normal aging. These conditions are due to heredity or lifestyle.