What causes the bladder to slow down after knee surgery?

After knee surgery, the bladder may slow down due to several factors, including the effects of anesthesia, pain medications, and reduced mobility. Anesthesia can temporarily impair neural control of bladder function, while opioids and other pain relievers may lead to constipation and urinary retention. Additionally, limited movement post-surgery can decrease the normal urge to urinate. These factors collectively contribute to a temporary slowdown in bladder activity.