Pain management in total knee arthroplasty: efficacy of a multimodal opiate-free protocol
- PMID: 28217658
- PMCID: PMC5297346
- DOI: 10.11138/jts/2016.4.4.222
Pain management in total knee arthroplasty: efficacy of a multimodal opiate-free protocol
Abstract
Purpose: this study was conducted to identify the most effective method of postoperative pain management, comparing the intravenous opiate infusion protocol with the use of a single periarticular local anesthetic infiltration (LAI) in patients undergoing total knee arthroplasty (TKA) surgery.
Methods: 50 patients submitted to TKA surgery between 2013 and 2015 were divided into two groups. Buprenorphine was administered intravenously to the patients in Group A, while the Group B patients received a single periarticular LAI (ropivacaine and ketorolac) during surgery. Pain was assessed using a visual analog scale (VAS) and the knee injury and osteoarthritis outcome score. Hemoglobin and hematocrit were measured in the early postoperative period and at 40 days post-surgery. Range of motion and inflammatory markers were also assessed. Statistical analysis was performed using Student's t-test.
Results: student's t-test showed no significant difference between the groups in functional outcomes or blood values, but a difference in VAS score on the day of surgery was found (p < 0.0001), in favor of Group B.
Conclusions: LAI considerably reduces postoperative pain, allowing rapid mobilization and accelerating functional recovery.
Level of evidence: Level I, prospective single-blind randomized trial.
Keywords: arthroplasty; knee; local anesthetic infiltration; opiate; pain management.
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References
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- Fang R, Liu Z, Alijiang A, et al. Efficacy of intra-articular local anesthetics in total knee arthroplasty. Orthopedics. 2015;38:e573–581. - PubMed
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- Kurosaka K, Tsukada S, Seino D, et al. Local infiltration analgesia versus continuous femoral nerve block in pain relief after total knee arthroplasty: a randomized controlled trial. J Arthroplasty. 2016;31:913–917. - PubMed
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