Patient-Controlled Analgesia and Peripheral Nerve Block Increase the Risk of Post-operative Urinary Retention after Total Knee Arthroplasty in Asian Patients

Post-operative urinary retention (POUR) is a common complication after total knee arthroplasty (TKA) and may result in severe complications such as urinary tract infection and deep joint sepsis, leading to prolonged hospital stay and increased medical costs. Hence a retrospective study was performed to identify the incidence and modifiable factors associated with POUR after elective TKA in Asian patients with the aim to prevent POUR and its undesirable consequences.