If osteoporosis is not treated, the following complications can occur: - Fractures - Osteoporosis causes bones to become weak and brittle, increasing the risk of fractures. The hip, spine, and wrist are the three most common places for fractures to occur. - Chronic pain - Osteoporosis often causes chronic pain that interferes with daily life. - Loss of mobility - Osteoporosis commonly results in mobility loss which raises the danger of falls and fractures. - Poor posture - Osteoporosis can lead to compression fractures of the spine which result in a loss of height and a hunched posture.