Abstract
The purpose of this prospective controlled trial was to determine if efficiency increases could be achieved in non-navigated and navigated total knee arthroplasties by replacing traditional saws, cutting blocks, and trials with specialized saws and single-use cutting blocks and trials. Various timing metrics during total knee arthroplasty, including operating room preparation times and specific intra-operative times, were measured in 400 procedures performed by eight different surgeons at 6 institutions. Efficiency increases were the result of statistically significant reductions in combined instrument setup and cleanup times as well as in adjusted surgical episode times in navigated total knee arthroplasties. Single-use instruments show promising benefits, but adequate patient follow-up is needed to confirm safety and efficacy before they can be widely adopted. Nevertheless, the authors believe that the use of single-use instruments, cutting guides, and trial implants for total knee arthroplasty will play an increasing role in improving operating room efficiency.
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