Persistent Pain following Total Knee Arthroplasty; The Role of Underlying Diseases

Abstract

Introduction With increasing age and joint destruction diseases, the need for surgery like Total knee Arthroplasty (TKA) has increased. Complications such as worsening or continuation of pain after surgery can occur in these surgeries that need rehabilitation and excess care. Factors like body mass index (BMI), psychiatric disorders, spine diseases, and underlying diseases can affect surgery outcomes. Aim Our study was conducted to evaluate the effect of BMI, psychiatric disorders, spine diseases, and underlying diseases on persistent and annoying pain after Total knee Arthroplasty. Method This case-control study was conducted on patients with a history of TKA study. Patients were assigned to case or control groups based on pain complaints after surgery. All patients were evaluated 6 months after the initial surgery. Results We enrolled 55 patients in the case group and 59 patients in the control group between June 2020 and September 2022, based on the Severity of pain measured using a visual analog scale (VAS) score. Our results show that BMI and diabetes mellitus (DM) had a meaningful relationship with pain after surgery (p value = 0.01). Other factors didn't show a significant difference between groups. Conclusion: Underlying diseases, psychiatric diseases, and spine disorders didn't significantly affect the pain after TKA. Patients with Diabetes mellitus (DM) and higher BMI showed greater pain after Total knee Arthroplasty.