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The Blue Book published by the British Orthopaedic Association and British Geriatrics Society, together with the introduction of National Hip Fracture Database Audit and Best Practice Tariff, have been influential in improving hip fracture care. We examined ten-year (2009–2019) changes in hip fracture outcomes after establishing an orthogeriatric service based on these initiatives, in 1081 men and 2891 women (mean age = 83.5 ± 9.1 years). Temporal trends in the annual percentage change (APC) of outcomes were identified using the Joinpoint Regression Program v4.7.0.0. The proportions of patients operated beyond 36 h of admission fell sharply during the first two years: APC = − 53.7% (95% CI − 68.3, − 5.2, P = 0.003), followed by a small rise thereafter: APC = 5.8% (95% CI 0.5, 11.3, P = 0.036). Hip surgery increased progressively in patients > 90 years old: APC = 3.3 (95% CI 1.0, 5.8, P = 0.011) and those with American Society of Anaesthesiologists grade ≥ 3: APC = 12.4 (95% CI 8.8, 16.1, P < 0.001). There was a significant decline in pressure ulcers amongst patients < 90 years old: APC = − 17.9 (95% CI − 32.7, 0.0, P = 0.050) and also a significant decline in mortality amongst those > 90 years old: APC = − 7.1 (95% CI − 12.6, − 1.3, P = 0.024). Prolonged length of stay (> 23 days) declined from 2013: APC = − 24.6% (95% CI − 31.2, − 17.4, P < 0.001). New discharge to nursing care declined moderately over 2009–2016 (APC = − 10.6, 95% CI − 17.2, − 2.7, P = 0.017) and sharply thereafter (APC = − 47.5%, 95%CI − 71.7, − 2.7, P = 0.043). The rate of patients returning home was decreasing (APC = − 2.9, 95% CI − 5.1, − 0.7, P = 0.016), whilst new discharge to rehabilitation was increasing (APC = 8.4, 95% CI 4.0, 13.0; P = 0.002). In conclusion, the establishment of an orthogeriatric service was associated with a reduction of elapsed time to hip surgery, a progressive increase in surgery carried out on high-risk adults and a decline in adverse outcomes. [ABSTRACT FROM AUTHOR]