Total Knee Arthroplasty Combined With Psychological Intervention for Patients With Psychological Disorders

Objective To evaluate the incidence of psychological problems in total knee arthroplasty (TKA) patients and examine whether perioperative psychological intervention can improve the outcomes of and patient satisfaction with TKA. Methods The investigators will prospectively collect clinical data from 400 patients who underwent primary TKA by the same surgeon at Peking University Third Hospital. The patients will be divided into 3 groups based on psychological status and intervention: the normal group comprised patients with a normal psychological status, while patients with an abnormal psychological status will be randomly divided into the intervention group, which received psychological interventions, and the control group, which do not receive any psychological interventions. The HSS（Hospital of special surgery） and WOMAC scores will be evaluated preoperatively, 3 months postoperatively and 6 months postoperatively. A self-administered satisfaction scale (very satisfied, somewhat satisfied, somewhat dissatisfied, very dissatisfied) that assessed overall satisfaction as well as satisfaction with pain relief and the ability to perform daily and leisure activities will be administered 6 months postoperatively. Hypothesis A certain percentage of TKA patients have preoperative psychological abnormalities. Preoperative psychological abnormalities can have an adverse effect on postoperative improvement in joint function and can reduce patient satisfaction. Preoperative psychological intervention can improve the prognosis of TKA patients with psychological disorders.