Densitometers are the devices that are used to measure the optical density of various opaque objects. A bone densitometer measures the bone mass that helps to measure the risk factors related to fracture and other bone problems. Bones are composed of calcium and other minerals. Reduction in amounts of any of these minerals may cause severe orthopedic conditions. Bone densitometers quantify the presence of these minerals in the bones. Bone densitometers are similar to X-ray scanners but are facilitated with two X-ray beams. These beams are of different wavelengths, a high energy beam and a low energy beam. The amount of energy that is not able to pass through the bone results in the formation of spots in the photographic plate. These spots guide the physicians about the orthopedic density and other conditions. Bone densitometers are used majorly to detect osteoporosis. Bone densitometers can be segmented as peripheral and axial bone densitometers. Peripheral bone densitometer helps to quantify the density of peripheral skeleton whereas; the axial skeletal density is quantified using an axial bone densitometer.