Knee replacement surgery sits at a crossroads of two public health crises: the opioid epidemic and the rapid aging of the population driving record surgical volumes. How post-surgical pain is managed in the days and weeks following total knee arthroplasty carries real consequences for long-term addiction risk, recovery trajectory, and functional outcomes — making any systematic framework for reducing opioid dependence clinically significant.
This comprehensive review maps three converging strategies for opioid-naïve patients undergoing total knee arthroplasty. The first centers on hard prescription quantity limits; the second deploys dynamic, reassessment-driven prescribing that adjusts medication in response to the patient's actual pain trajectory rather than protocol defaults. The third — and the approach the authors regard as most promising — is a tiered multimodal regimen. This protocol anchors pain control in a foundation of non-opioid agents: acetaminophen, NSAIDs, and gabapentinoids, stepping up only conditionally to tramadol and, as a last resort, stronger opioids. The perioperative architecture is reinforced by preoperative cryoneurolysis, intraoperative regional nerve blocks, and long-acting local anesthetics. Real-world data from the iGOR registry are cited as supporting reductions in opioid consumption alongside improved functional recovery.
The multimodal approach is not novel in principle — pain specialists have advocated stepwise analgesia for over a decade — but its structured codification for knee arthroplasty specifically, combined with new reimbursement incentives under the NOPAIN Act, may shift adoption from boutique academic centers to community practice. The key limitation here is that a narrative review synthesizes existing literature without the statistical rigor of a meta-analysis, so effect sizes and comparative efficacy remain imprecise. Cryoneurolysis, in particular, lacks the breadth of randomized controlled trial evidence supporting nerve blocks. Still, the convergence of clinical evidence, registry data, and legislative tailwinds represents a meaningful shift in the structural incentives around post-surgical opioid prescribing — an incremental but potentially high-impact development given that knee arthroplasty is among the most commonly performed elective surgeries in adults over 60.