On the day of surgery, participating patients will be taken to the regional block area. Control group patients will be given a single injection of LA, under ultrasound guidance, to block the appropriate target nerve(s). These patients will undergo surgery and post-anesthesia recovery as per standard procedures. For patients in the experimental group, the attending anesthesiologist will, under ultrasound guidance, insert a perineural catheter at an appropriate location to block the target nerve. Once the catheter is in place, a single dose of LA will be delivered to block the target nerve, and the catheter will remain in the patient throughout the procedure. In the post-anesthesia recovery area, patients with a catheter will receive a second bolus infusion of the same LA. When the patient is approved for discharge, the catheter will be removed, the insertion site cleaned, and the patient will be allowed to go home.