The incidence and risk factors of phobic movement disorder after hip fracture internal fixation surgery

Objective This study aims to analyze the cumulative incidence and associated risk factors of phobic movement disorder (PMD) after hip fracture internal fixation surgery, with the goal of optimizing postoperative rehabilitation management and improving the quality of life in elderly patients. Methods A total of 269 patients who underwent hip fracture internal fixation surgery at our hospital from June 2022 to June 2024 were retrospectively included. Clinical data, including age, sex, BMI, underlying diseases, psychological status, postoperative hip joint function, and self-efficacy, were collected. PMD was assessed using the Tampa Scale for Kinesiophobia (TSK), pain acceptance was evaluated using the Chronic Pain Acceptance Questionnaire (CPAQ-8), anxiety and depression status were assessed with the Hospital Anxiety and Depression Scale (HADS), hip joint function was measured using the Harris Hip Score, and self-efficacy was evaluated using the General Self-Efficacy Scale (GSE). Univariate analysis and multivariate binary logistic regression analysis were used to identify independent risk factors for PMD. The variance inflation factor (VIF) was calculated to assess multicollinearity. Results The cumulative incidence of PMD was 34.9%. Univariate analysis revealed that BMI >= 30 kg/m(2), low pain acceptance, anxiety and depression, poor postoperative hip joint function, and low self-efficacy were significantly associated with PMD (P < 0.001). Multivariate logistic regression analysis further confirmed that BMI >= 30 kg/m(2) (OR = 4.07, 95% CI [2.39, 6.94]), low pain acceptance (OR = 4.67, 95% CI [2.69, 8.10]), anxiety and depression (OR = 4.14, 95% CI [2.44, 7.04]), poor postoperative hip joint function (OR = 10.61, 95% CI [5.67, 19.87]), and low self-efficacy (OR = 4.19, 95% CI [2.44, 7.18]) were independent risk factors for PMD. All VIF values were < 5, indicating no significant multicollinearity. Conclusion PMD is common after hip fracture internal fixation surgery and is closely associated with high BMI, low pain acceptance, anxiety and depression, poor postoperative hip joint function, and low self-efficacy. The VIF analysis showed no significant multicollinearity, indicating stable results. Comprehensive interventions targeting high-risk factors may help reduce the incidence of PMD and improve postoperative recovery.