Efficacy of Peripheral Nerve Blocks in Total Knee Arthroplasty

For postoperative pain management, a patient-controlled analgesia (PCA) pump will be routinely applied to the patient in our clinic. An infusion of an opioid (tramadol hydrochloride) at an appropriate dose will be administered via intravenous route through the pump, and the patient will be provided with detailed information about its use. Instead of continuous infusion, the device will deliver intermittent bolus doses when the patient's numeric rating scale (NRS) score is 4 or higher.

All patients will receive routine prophylactic analgesia with 1 gram of intravenous paracetamol every 6 hours (which may be skipped if the patient's pain score is 2 or below and they do not request pain relief).

If the pain persists despite the administered analgesics and the patient's pain score remains 4 or above, rescue analgesia with intramuscular diclofenac sodium, which is routinely used in our clinic, will be administered.