Abstract: Objective: To explore the development trajectory and influencing factors of postoperative kinesiophobia in elderly patients with Osteoporotic Hip Fracture (OHF), aiming to provide references for psychological care in such patients. Methods: A total of 241 elderly patients with OHF were recruited in a tertiary grade A hospital in Nanchang from January 2022 to November 2024 through convenience sampling. The Tampa Scale of Kinesiophobia was used to assess the kinesiophobia levels of patients at 1 day, 1 month, 3 months, and 6 months after treatment. The optimal number of trajectories was analyzed and named through the latent growth mixture model. Unordered multinomial Logistic regression analysis was employed to explore the influencing factors of development trajectories. Results: The kinesiophobia scores of patients at 1 day, 1 month, 3 months, and 6 months after treatment were 40.16±5.91, 38.91±6.30, 36.65±6.46, and 34.75±7.05, respectively. The development of kinesophobia could be categorized into four trajectories: no kinesiophobia-maintained (28.6%), high kinesiophobia-improved (24.1%), moderate kinesiophobia-maintained (20.7%), and moderate kinesiophobia-overcomed (26.6%). Educational level, working status, postoperative complications, other concurrent chronic diseases, anxiety, depression, pain intensity, self-efficacy, and social support level were all the independent influencing factors for the differences in the development trajectory of postoperative kinesiophobia (P<0.05). Conclusion: The development of postoperative kinesiophobia in elderly patients with OHF shows group heterogeneity. Medical staff should formulate targeted nursing measures to address the influencing factors of each kinesiophobia development trajectory.

Key words: Osteoporotic Hip Fracture; kinesiophobia; elderly patient; latent growth mixture model; influencing factor