Osteoporosis Osteoporosis causes a loss of bone mass and destruction of bone tissue. The bones most often affected are the hips, spine, and wrists. Bone Density Test A bone density test measures the strength and density of your bones as you approach menopause and, when the test is repeated sometime later, can help determine how quickly you are losing bone mass and density. Preventing Broken Bones Bones are tough and resilient, but if you push them hard enough—if you fall on a hard surface, for instance—they can crack or break. Hip Fracture A hip fracture is classified by the specific area of the break and the type of break(s) in the bone. It is a serious injury and requires immediate medical attention. Osteoporosis: Evaluate Your Risk Many people are unaware they have osteoporosis until they have advanced symptoms, which may include a broken hip or wrist, low back pain or a hunched back.