Veronese N, Maggi S (2018) Epidemiology and social costs of hip fracture. Injury 49:1458–1460. https://doi.org/10.1016/j.injury.2018.04.015

Article  PubMed  Google Scholar 

Dyer SM, Crotty M, Fairhall N, Magaziner J, Miller MD, Cameron ID, Close JCT (2016) A critical review of the long-term disability outcomes of hip fracture. BMC Geriatr 16:158. https://doi.org/10.1186/s12877-016-0332-0

Article  PubMed  PubMed Central  Google Scholar 

Haentjens P, Magaziner J, Colón-Emeric CS, Vanderschueren D, Milisen K, Velkeniers B, Boonen S (2010) Meta-analysis: excess mortality after hip fracture among older women and men. Ann Intern Med 152:380–390. https://doi.org/10.7326/0003-4819-152-6-201003160-00008

Article  PubMed  PubMed Central  Google Scholar 

Mori Y, Tarasawa K, Tanaka H, Mori N, Fushimi K, Fujimori K, Aizawa T (2024) Surgery on admission and following day reduces hip fracture complications: a Japanese DPC study. J Bone Miner Metab 42:608–615. https://doi.org/10.1007/s00774-024-01534-2

Article  PubMed  PubMed Central  Google Scholar 

Pincus D, Ravi B, Wasserstein D, Huang A, Paterson JM, Nathens AB, Wodchis WP, Kreder HJ, Jenkinson RJ (2017) Association between wait time and 30-day mortality in adults undergoing hip fracture surgery. JAMA 318:1994–2003. https://doi.org/10.1001/jama.2017.17606

Article  PubMed  PubMed Central  Google Scholar 

Shiga T, Wajima Z, Ohe Y (2008) Is operative delay associated with increased mortality of hip fracture patients? Systematic review, meta-analysis, and meta-regression. Can J Anaesth 55:146–154. https://doi.org/10.1007/BF03016088

Article  PubMed  Google Scholar 

Sun L, Wang C, Zhang M, Li X, Zhao B (2023) The surgical timing and prognoses of elderly patients with hip fractures: a retrospective analysis. Clin Interv Aging 18:891–899. https://doi.org/10.2147/CIA.S408903

Article  PubMed  PubMed Central  Google Scholar 

Oakley B, Nightingale J, Moran CG, Moppett IK (2017) Does achieving the best practice tariff improve outcomes in hip fracture patients? An observational cohort study. BMJ Open 7:e014190. https://doi.org/10.1136/bmjopen-2016-014190

Article  CAS  PubMed  PubMed Central  Google Scholar 

Griffin XL, Achten J, Parsons N, Costa ML, WHiTE Collaborators (2021) Does performance-based remuneration improve outcomes in the treatment of hip fracture? Bone Joint J 103-B:881–887. https://doi.org/10.1302/0301-620X.103B5.BJJ-2020-1839.R1

Article  PubMed  PubMed Central  Google Scholar 

Whitaker SR, Nisar S, Scally AJ, Radcliffe GS (2019) Does achieving the ‘Best Practice Tariff’ criteria for fractured neck of femur patients improve one year outcomes? Injury 50:1358–1363. https://doi.org/10.1016/j.injury.2019.06.007

Article  PubMed  Google Scholar 

Yamada Y, Kotani T, Kishida S, Mitsui S, Koyama T, The Y, Kojima T, Otsuka T (2024) Factors influencing the achievement of early surgery in proximal femoral fractures under a Japanese incentive policy. J Orthop Sci 29:1–7. https://doi.org/10.1016/j.jos.2024.08.001

Article  Google Scholar 

Ministry of Health, Labour and Welfare (2024) Work style reform for physicians. Available from: https://www.mhlw.go.jp/stf/seisakunitsuite/bunya/kenkou_iryou/iryou/ishi-hatarakikata_34355.html. [Accessed July 14, 2025] (in Japanese).

von Elm E, Altman DG, Egger M, Pocock SJ, Gøtzsche PC, Vandenbroucke JP, Initiative STROBE (2008) The STROBE statement: guidelines for reporting observational studies. J Clin Epidemiol 61:344–349. https://doi.org/10.1016/j.jclinepi.2007.11.008

Article  Google Scholar 

Japanese Orthopaedic Association, Japanese Society for Fracture Repair (2021) Guidelines for the treatment of femoral neck/subtrochanteric fractures 2021, 3rd ed. Nankodo, Tokyo, pp 49–109 (in Japanese)

Dreinhöfer KE, Mitchell PJ, Bégué T, Cooper C, Costa ML, Falaschi P, Hertz K, Marsh D, Maggi S, Nana A, Palm H, Speerin R, Magaziner J (2018) A global call to action to improve the care of people with fragility fractures. Injury 49:1393–1397. https://doi.org/10.1016/j.injury.2018.06.032

Article  PubMed  Google Scholar 

Heinze G, Schemper M (2002) A solution to the problem of separation in logistic regression. Stat Med 21:2409–2419. https://doi.org/10.1002/sim.1047

Article  PubMed  Google Scholar 

Brownson RC, Chriqui JF, Stamatakis KA (2009) Understanding evidence-based public health policy. Am J Public Health 99:1576–1583. https://doi.org/10.2105/AJPH.2008.156224

Article  PubMed  PubMed Central  Google Scholar 

Nijland LMG, Karres J, Simons AE, Ultee JM, Kerkhoffs GMMJ, Vrouenraets BC (2017) The weekend effect for hip fracture surgery. Injury 48:1536–1541. https://doi.org/10.1016/j.injury.2017.05.017

Article  PubMed  Google Scholar 

Segura-Nuez JC, Infantes-Morales M, García-Hernández A, Segura-Nuez J, Martín-Hernández C, Roche-Albero A (2024) The weekend effect in hip fracture: the critical role of resource management. J Healthc Qual Res 39:101131. https://doi.org/10.1016/j.jhqr.2025.101131

Article  Google Scholar 

Zeltzer J, Mitchell RJ, Toson B, Harris IA, Close J (2014) Determinants of time to surgery for patients with hip fracture. ANZ J Surg 84:633–638. https://doi.org/10.1111/ans.12671

Article  PubMed  Google Scholar 

Nishimura H, Suzuki H, Tokutsu K, Muramatsu K, Kawasaki M, Yamanaka Y, Uchida S, Nakamura E, Fushimi K, Matsuda S, Sakai A (2024) Early surgical treatment using regional clinical pathways to reduce the length of postoperative hospital stay in hip fracture patients: a retrospective analysis using the Japanese diagnosis procedure combination database. PLoS ONE 19:e0282766. https://doi.org/10.1371/journal.pone.0282766

Article  CAS  PubMed  PubMed Central  Google Scholar 

Sheehan KJ, Sobolev B, Guy P, Kuramoto L, Morin SN, Sutherland JM, Beaupre L, Griesdale D, Dunbar M, Bohm E, Harvey E (2016) In-hospital mortality after hip fracture by treatment setting. CMAJ 188:1219–1225. https://doi.org/10.1503/cmaj.160522

Article  PubMed  PubMed Central  Google Scholar 

Hagino H, Wada T (2019) Osteoporosis liaison service in Japan. Osteoporos Sarcopenia 5:65–68. https://doi.org/10.1016/j.afos.2019.09.003

Article  PubMed  PubMed Central  Google Scholar 

Suzuki A (2023) Multidisciplinary approach to management of osteoporosis with osteoporosis liaison service (OLS). Endocr J 70:459–464. https://doi.org/10.1507/endocrj.EJ23-0040

Article  PubMed  Google Scholar 

Hagino H, Endo N, Harada A, Iwamoto J, Mashiba T, Mori S, Ohtori S, Sakai A, Takada J, Yamamoto T (2017) Survey of hip fractures in Japan: recent trends in prevalence and treatment. J Orthop Sci 22:909–914. https://doi.org/10.1016/j.jos.2017.06.003

Article  PubMed  Google Scholar 

Ministry of Health, Labour and Welfare (2022) Overview of the 2020 DPC-based hospitalization functional evaluation data. Available from: https://www.mhlw.go.jp/stf/seisakunitsuite/bunya/0000177221.html. [Accessed July 14, 2025] (in Japanese)