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Flowchart of subjects in the second year of follow-up. Sixteen patients (13%) patients in the Op group had a revision surgery. The cumulative cost over two years for the Op group was $79,325 with a QALY gain of 0.4. The cumulative cost over two years for the Non-Op group was $15,101 with a QALY gain of 0.1. The ICER was $196,721 per QALY gained
