Cutting through the hype to achieve true milestones in Total Knee Arthroplasty
Background: Despite advancements in implant technology and surgical techniques, achieving consistently successful outcomes in total knee arthroplasty (TKA) remains a clinical challenge. Identifying perioperative interventions that provide sustained functional improvements is essential to distinguish evidence-based practices from those with limited clinical utility.
Objective: This narrative review aims to evaluate the preoperative, intraoperative, and postoperative factors that meaningfully influence TKA outcomes and to identify interventions that lack demonstrated clinical efficacy.
Key Points: Preoperative success is driven by appropriate patient selection, specifically targeting Kellgren-Lawrence Grade 4 disease, and comprehensive medical optimization of anemia and diabetes. The administration of high-dose corticosteroids and cryocompression therapy further enhances early recovery. Intraoperatively, reducing surgical time to under 60 minutes, utilizing personalized alignment for specific phenotypes (CPAK 1, 2, and 4), and employing cementless fixation in young or obese patients are critical. Technical refinements, including the use of tranexamic acid, watertight capsular closure, and anatomical local infiltration anesthesia, contribute to reduced complications. Postoperatively, early mobilization within 12 hours and the use of low-dose aspirin for thromboprophylaxis are fundamental to optimizing functional restoration. Conversely, several modern techniques, such as robotic-assisted surgery, computer navigation, and specific surgical approaches, have not demonstrated superior clinical outcomes compared to conventional methods.
Conclusion: Superior TKA results are achieved through the systematic implementation of validated perioperative protocols. Surgeons should prioritize evidence-supported interventions, such as rigorous patient selection and optimized fixation strategies, while remaining critical of high-cost technological innovations that do not offer clear clinical advantages.
