Osteoporosis is one of the major risk factors of fragility fractures and an important health threat in elderly. In Taiwan, one out of five men and four out of ten women met the diagnosed criteria of osteoporosis. Patients with hip fragility fractures have a high mortality and disability. However, most people with osteoporosis are asymptomatic and no tangible effect is experienced after treatments, which resulted in poor treatment compliance. Shared decision making (SDM) may raise awareness of the disease, thus improves patient insights and medical compliance. In the design of SDM models in osteoporosis management, disease risks, uncertainty and perception of risk should be specifically presented. This study is aimed to demonstrate how to design a patient decision aid (PDA) for osteoporosis managements according to the above suggestions.