Pain Relief After PrimaryTKA

Comparing the Efficacy of a Periarticular Instillation of Extended Relief Bupivacaine and Meloxicam With Routine Adductor Canal Blockade for Pain Relief After Primary TKA

While a majority of people who undergo TKA have significant long-term improvement in functional ability, many patients may experience significant pain in the early postoperative period, which may adversely impact postoperative rehabilitation and recovery. Traditionally, opioid medications have been used to control postoperative pain. However, there are many risks with using opioid medications, including addiction and overdose, which kills over 48,000 people yearly. In an effort to overcome this, opioid-sparing multimodal analgesia (MMA) regimens have been developed, commonly using nonsteroid anti-inflammatory drugs (NSAIDs), acetaminophen, regional nerve blocks, and local anesthesia.

Inclusion Criteria:

• Patients 18 years or older
• Patients undergoing primary unilateral TKA
• Patients receiving spinal anesthesia during primary TKA
• Patients with adequate cognitive function to participate and complete questionnaires for the study

Exclusion Criteria:

• Patients undergoing bilateral simultaneous TKA
• Patients undergoing conversion TKA
• Patients undergoing unicompartmental knee arthroplasty
• Patients undergoing patellofemoral arthroplasty
• Patients with an allergy to NSAIDs or bupivacaine
• Patients who have a contraindication to the use of NSAIDs
• Patients who are using chronic anticoagulation, precluding them from using NSAIDs
• Patients with a history or diagnosis of chronic pain syndrome or complex regional pain syndrome
• Patients who are determined to be in severe pain from other concomitant conditions
• Patients with chronic opioid use disorder, defined as patients who are taking more than 20 mg/day morphine milligram equivalents for 30 days consecutively in the 3 months prior to surgery.