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Percentage of patients in whom bone density and/or bone metabolism markers were measured after fracture (%)Percentage of patients who received osteoporosis treatment after fracture (%)32Table 1　Percentages of patients undergoing tests for osteoporosis and receiving treatment after osteoporotic fractures2015.8-2016.72018.10-2019.22015.8-2016.72018.10-2019.2Figure 1　Common sites of osteoporotic fracturesOVFPFF58.854.134.011.875.070.336.223.5year. Guidelines for the prevention of this secondary fracture have now been created. According to these, patients with an OVF or PFF are recom-mended to start medication for osteoporosis, and when a patient suffers from another osteoporotic fracture, drug treatment is to be initiated if evalua-tion of bone mineral density (BMD) shows a value of 80% or less of the young adult mean (YAM). It has been reported that the risk can be reduced to less than half by secondary fracture prevention4). Based on this, we investigated the current status of prevention of secondary fractures due to osteopo-rosis at our institution (Table 1). The subjects were patients who suffered osteoporotic fractures (OVF, PFF, PHF or DRF) between August 2015 DRFPHF15.414.350.0038.528.650.08.3osteoporotic vertebral fractures (OVF)proximal femur fractures (neck or trochanteric fractures of the femur, PFF)Secondary fractureWhen an osteoporotic fracture occurs, the patient is also more likely to have another fracture. This is called a secondary fracture, and the secondary fracture causes the next fracture, forming a nega-tive chain. For example, in OVF, if a patient suffers from one OVF, the probability of suffering a second OVF is 2.6 times higher, and if there are two OVF, the probability of suffering a third OVF is five times higher3). Similarly, for PFF, the risk of devel-oping a contralateral PFF after one PFF is four times higher than in the general population. More-over, it is known that one in five people who have a fracture will suffer one on the other side within a Provided by illustrator Kazunori Honjo proximal humerus fractures(PHF)distal radius fractures(DRF)