2026 AAHKS Annual Meeting: Meniscal Root Tears: Medial Unicompartmental Knee Arthroplasty vs. Meniscal Root Repairy

108 patients aged 55 years or older with medial meniscal root tears were retrospectively matched to receive medial unicompartmental knee arthroplasty (UKA) (n=54) or medial meniscal root repair (n=54). The primary outcomes of interest were patient-reported functional outcomes assessed using the Knee Injury and Osteoarthritis Outcome Score Physical Function Short Form (KOOS-PS) and Patient-Reported Outcomes Measurement Information System Physical Function Short Form-10a (PROMIS PF-10a). Secondary outcomes included minimal clinically important difference (MCID) achievement, conversion to arthroplasty, and reoperation rates. Outcomes were assessed up to 2 years. Overall, the results revealed that medial UKA was associated with significantly greater improvement in KOOS-PS scores and higher MCID achievement compared to meniscal root repair, while PROMIS PF-10a outcomes and complication rates were comparable. These findings suggested that medial UKA may provide superior knee-specific functional improvement in selected older patients with medial meniscal root tears.