Characteristics and influencing factors of early pain in patients after total knee arthroplasty

To investigate the current status of early pain in patients after total knee arthroplasty under enhanced recovery mode and analyze the influencing factors. In the study, 142 patients with total knee arthroplasty of a hospital in Beijing were investigated by convenient sampling. Visual analog scale (VAS) was used to describe the degree of pain (including resting pain and activity pain) within 3 days after operation, and the nature and location of pain and satisfaction with the analgesic effect of the patients were recorded. The influencing factors included age, gender, place of residence, education level, body mass index (BMI), years of pain, chronic medical history, surgical history, surgical duration, whether to indwell a drainage tube, type of carer, severity of the disease, sleep quality, anxiety, depression, and preoperative pain level. The investigation tools of influencing factors were the general information questionnaire of patients, pain assessment questionnaire, Pittsburgh sleep quality index (PSQI)