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Abstract Objectives To project how many minimal trauma fractures could be averted in Australia by expanding the number and changing the operational characteristics of fracture liaison services (FLS). Study design System dynamics modelling. Setting, participants People aged 50 years or more who present to hospitals with minimal trauma fractures, Australia, 2020–31. Main outcome measures Numbers of all minimal trauma fractures and of hip fractures averted by increasing the FLS number (from 29 to 58 or 100), patient screening rate (from 30% to 60%), and capacity for accepting new patients (from 40 to 80 per service per month), and reducing the proportion of eligible patients who do not attend FLS (from 30% to 15%) ; cost per fracture averted. Results Our model projected a total of 2 441 320 minimal trauma fractures (258 680 hip fractures; 2 182 640 non‐hip fractures) in people aged 50 years or older during 2020–31, including 1 211 646 second or later fractures. Increasing the FLS number to 100 averted a projected 5405 fractures (0. 22%; 39 510 per fracture averted) ; doubling FLS capacity averted a projected 3674 fractures (0. 15%; 35 835 per fracture averted). Our model projected that neither doubling the screening rate nor reducing by half the proportion of eligible patients who did not attend FLS alone would reduce the number of fractures. Increasing the FLS number to 100, the screening rate to 60%, and capacity to 80 new patients per service per month would together avert a projected 13 672 fractures (0. 56%) at a cost of 42 828 per fracture averted. Conclusion Our modelling indicates that increasing the number of hospital‐based FLS and changing key operational characteristics would achieve only moderate reductions in the number of minimal trauma fractures among people aged 50 years or more, and the cost would be relatively high. Alternatives to specialist‐led, hospital‐based FLS should be explored.
Jones et al. (Mon,) studied this question.