Publication: Impact of surgical instrumentation on hospital length of stay and cost of total knee
arthroplasty
Authors
León Muñoz, Vicente J. ; López López, Mirian ; Martínez Martínez, Francisco ; Santonja Medina, Fernando
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Publisher
Taylor and Francis
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DOI
https://doi.org/10.1080/14737167.2020.1778468
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info:eu-repo/semantics/article
Description
© 2020 Informa UK Limited. This document is the Published Manuscript, version of a Published Work that appeared in final form in Expert Review of Pharmacoeconomics & Outcomes Research. To access the final edited and published work see https://doi.org/10.1080/14737167.2020.1778468
Abstract
Background: We aimed to analyze the impact of two different types of surgical instrumentation
(conventional manual instrumentation (CI) and patient-specific instrumentation (PSI)) on length of
stay (LOS) and objectify differences in cost. We hypothesized that there are no differences in the LOS
and cost due to the instrumentation system used.
Research design and methods: LOS was registered using inpatient admission data provided by the
Institutional Management Control Department. We recorded the costs associated with each procedure
that could be influenced by the use of one system or another during the in-hospital stay. We conducted
a prospectively single-center cohort study of 305 TKAs. Surgery was performed with conventional CI in
122 cases and with PSI in 183 cases.
Results: The mean LOS for the CI group was 4.29 days (SD 1.65) and 4.22 days (SD 1.26), for the PSI
group. No significant difference among both instrumentation systems was obtained. When comparing
global costs, the mean cost was slightly higher (without a significant difference) for the PSI cases
(€3110.24 vs. €2852.7 for the CI cases).
Conclusions: LOS and overall cost, in hospitals with a low annual TKA surgery volume, are unrelated to
conventional or patient-specific instrumentation.
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Citation
Expert Review of Pharmacoeconomics & Outcomes Research, 2021, Vol. 21, Issue 2, pp. 299-305
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