Recently, technological advances have made it possible to quantify pounds of pressure across the bearing surface during TKA. This multicenter evaluation, using intraoperative sensors, was performed for two reasons: 1) to define “balance” 2) to determine if patients with balanced knees exhibit improved short-term clinical outcomes. Outcomes scores were compared between “balanced” and “unbalanced” patients. At 6-months, the balanced cohort scored 172.4 and 14.5 in KSS and WOMAC, respectively; the unbalanced cohort scored 145.3 and 23.8 in KSS and WOMAC (P < 0.001). Out of all confounding variables, balanced joints were the most significant contributing factor to improved postoperative outcomes (P < 0.001). Odds ratios demonstrate that balanced joints are 2.5, 1.3, and 1.8 times more likely to achieve meaningful improvement in KSS, WOMAC, and activity level, respectively.
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The Journal of Arthroplasty, Volume 29, Issue 5, 955 - 960
Knee
A New Method for Defining Balance
Gustke, Kenneth A. et al.Knee