Single-use versus reusable medical devices in spinal fusion surgery: a hospital micro-costing analysis.

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Healthcare facilities could minimize the cost of surgical instrument and implant processing by using single-use devices. The main objective was to prospectively compare the total cost of a single-use and reusable device used in short lumbar spine fusion. A 1-year, single-centre, prospective study was performed on patients requiring a one- or two-level lumbar arthrodesis. Patients were randomized in two groups treated with either reusable or single-use device. A cost minimization analysis was performed using a micro-costing approach from a hospital perspective. Every step of the preparation process was timed and costed based on hourly wages of hospital employees, cleaning supplies and hospital waste costs. Forty cases were evaluated. No significant difference in operation time was noted (reusable 176.1 ± 68.4min; single use 190.4 ± 71.7min; p = 0.569). Mean processing time for single-use devices was lower than for reusable devices (33min vs. 176min) representing a cost of 14€ versus 58€ (p < 0.05). Pre-/post-sterilization and spinal set recomposing steps were the most time-consuming in reusable device group. A total cost saving of 181€ per intervention resulted from the use and processing of the single-use device considering an additional sterilization cost of 137€ with the reusable device. The weight of the reusable device was 42kg for three containers and 1.2kg for the single-use device. Owing to the absence of re-sterilization, single-use devices in one- and two-level lumbar fusion allow significant money and time savings. They may also avoid delaying surgery in case of reusable device unavailability.