Objective To explore the application of nursing intervention based on behavior change wheel(BCW) theory in reducing kinesiophobia after total knee arthroplasty.

Methods Sixty patients undergoing unilateral total knee arthroplasty were selected and divided into observation group and control group according to the order of admission, with 30 cases in each group.The control group was treated with routine nursing methods after knee surgery, and the observation group was treated with nursing intervention based on BCW theory on the basis of the control group.The kinesiophobia level and knee joint function level of patients in the two groups were compared, and the correlation between the kinesiophobia level and the knee joint function level in the observation group after discharge was analyzed.

Results The kinesiophobia scores of patients in the two groups before intervention and at 1 month, 3 months, and 6 months after discharge gradually decreased(P < 0.01).There was no significant difference in kinesiophobia scores between the two groups before intervention(P>0.05), and the kinesiophobia scores in observation group were significantly lower than those in control group at 1 month, 3 months, and 6 months after discharge(P < 0.01).There was no significant difference in knee function scores of patients between the two groups before intervention(P>0.05);the knee function scores in the two groups before intervention and at 1 month, 3 months, 6 months after discharge gradually increased(P < 0.01);the knee function scores in observation group were significantly higher than those in control group at 1 month, 3 months, and 6 months after discharge(P < 0.01).The knee function scores of patients in observation group were negatively correlated with the kinesiophobia scores at 1 month, 3 months, and 6 months after discharge(r=-0.202, -0.312, -0.365, P < 0.05 to P < 0.01).

Conclusions Nursing intervention based on the BCW theory can effectively reduce the level of kinesiophobia after total knee arthroplasty, which is beneficial to the recovery of knee function of patients.