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Randomized Controlled Trial
. 2014 Sep;29(9):1699-704.
doi: 10.1016/j.arth.2014.03.019. Epub 2014 Mar 28.

Patient specific instrumentation

David R Lionberger  1 , Catherine L Crocker  2 , Vincent Chen  3
Affiliations
Randomized Controlled Trial

Patient specific instrumentation

David R Lionberger et al. J Arthroplasty. 2014 Sep.

Abstract

Patient specific instrumentation (PSI) has recently been developed as a replacement for traditional instrumentation in total knee arthroplasty (TKA). The study aim was to assess efficiency via the mean total OR time using the PSI versus computer-assisted (CAS) TKAs with accuracy as a secondary endpoint. Sixty patients were randomized to CAS or PSI. A formula was developed to derive a profit ratio (PR) that incorporated costs, revenue, and total OR time. The PSI cases were 1.45 times more profitable than CAS allowing for approximately 3 PSI cases versus 2 CAS cases in one 8 hour OR day. Results from this series show that PSI improves OR efficiency, but does not improve accuracy.

Trial registration: ClinicalTrials.gov NCT01331278.

Keywords: operating room efficiency; patient specific instrumentation; total knee arthroplasty.

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