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J Arthroplasty. 2014 May;29(5):955-60. doi: 10.1016/j.arth.2013.10.020. Epub 2013 Oct 24.

A new method for defining balance: promising short-term clinical outcomes of sensor-guided TKA.

Author information

1
Florida Orthopaedic Institute, Tampa, Florida.
2
Orthopaedic Associates of Michigan, Grand Rapids, Michigan.
3
Orthopaedic Research Institute Holy Cross Hospital Fort Lauderdale, Florida.
4
Department of Bioengineering and Clinical Research Orthosensor Inc., Dania, Florida.

Abstract

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.

KEYWORDS:

improvement KSS; improvement WOMAC; intraoperative sensors; short-term outcomes; soft-tissue balance; total knee arthroplasty

PMID:
24269069
DOI:
10.1016/j.arth.2013.10.020
[Indexed for MEDLINE]
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