Objective To explore the application effects of core stability training combined with health belief model nursing intervention in patients after total knee arthroplasty (TKA).

Methods A total of 210 patients who underwent TKA treatment were selected as study subjects, and were randomly divided into control group and observation group, with 105 cases in each group. The control group received routine nursing, while the observation group received core stability training combined with health belief model nursing intervention on the basis of the control group. Both groups received continuous intervention for 3 months. The knee joint function, lower limb motor function, and functional exercise compliance before and after intervention were compared.

Results After intervention, the Hospitalfor Special Surgery (HSS) for knee score and the range of motion (ROM) of the knee joint in both groups improved, and the observation group were higher than those in the control group (P < 0.05). After intervention, the modified Gait Efficacy Scale (mGES), standardized stride length, and sit-to-stand transition time (STS) in both groups improved compared to intervention before, and the observation group showed better results than the control group (P < 0.05). The exercise compliance in the observation group was better than that in the control group (P < 0.05).

Conclusion Core stability training combined with health belief model nursing intervention is beneficial for improving knee joint function and motor function of lower limb in patients after TKA, thereby enhancing patients' functional exercise compliance, and promoting patient rehabilitation.