Soft tissue balance

Soft tissue balance more important than knee alignment in TKA outcomes

At the American Academy of Orthopaedic Surgeons Annual Meeting, Jeffrey H. DeClaire, MD, FAAOS, discussed a multicenter study in which a robotic-assisted system was used for total knee arthroplasty planning in 266 patients.

The patients underwent TKA with knee balancing done within 0.5 mm as measured by a the OMNIBot robotic-assisted system (Corin Group). Researchers focused their analysis on laxity difference on the medial and lateral side of the knee in extension, mid-flexion and flexion. They then correlated those laxity parameter findings with the KOOS pain score, according to DeClaire.

“What we found was that when we balance that knee, again within a half a millimeter, which we’re able to measure with this OMNIBot, having a knee that’s slightly tighter medially than laterally at extension and close to equal or tighter medially at mid-flexion and slightly more lax lateral than the medial at flexion created a significant improvement in the KOOS pain score,” DeClaire told Healio.

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