Predictive factors for longterm joint pain in patients with total knee arthroplasty

Abstract

Objective The study aimed to explore the characteristics of a long-term range-of-motion pain (ROMP) and influencing factors on ROMP in patients with total knee arthroplasty (TKA). Methods 138 TKA patients meeting the criteria were included. Anxiety and depression levels were assessed with Hamilton Depression Rating Scale and Hamilton Anxiety Rating Scale before surgery. Visual Analogue Scale (VAS) was used to assess preoperative joint pain at rest and ROMP. ROMP was reevaluated with VAS at postoperative 6-month clinic visit. Logistic regression analysis was used to investigate the relationship between postoperative moderate to severe ROMP and preoperative variable. Results 26 cases showed moderate to severe ROMP at postoperative 6-month clinic visit. Patients with moderate to severe ROMP had a higher ROMP score, more severe resting pain and higher anxiety and depression levels compared with those non-moderate to severe ROMP. Multivariate analysis found that preoperative severe ROMP and anxiety level were independent factors for postoperative long-term moderate to severe ROMP. Conclusions TKA patients show a long-term ROMP. Preoperative anxiety levels and severe ROMP are closely associated with moderate to severe postoperative ROMP. Based on these results, effective communication and intervention before surgery will increase satisfaction and improve surgical results in TKA patients. Key words: Arthralgia; Anxiety; Arthroplasty, replacement, knee; Osteoarthritis