Objective: The aim of this study was to identify whether different patient characteristics and clinical factors can be risk factors in patients with persistent postsurgical pain (PPSP) after total knee arthroplasty (TKA).
Methods: Patients who underwent TKA due to knee osteoarthritis were divided into two groups: those who experienced no or mild PPSP (Numerical Rating Scale [NRS] ≤ 3) (group 1, n = 91) and those who experienced moderate to severe PPSP (NRS > 3) (group 2, n = 183). Information on the characteristics of patients, comorbid diseases and pre-surgical NRS scores were obtained retrospectively from hospital charts.