• Lauren Fader, John Whitaker, Miguel Lopez, Bradley Vivace, Mauricio Parra, Jon Carlson, and Rodolfo Zamora.
• University of Louisville, Department of Orthopedic Surgery, Louisville, Kentucky, United States. Electronic address: lfader21@gmail.com.
• Injury. 2018 Dec 1; 49 (12): 2290-2294.

PurposeThe purpose of this study was to compare healing time for diaphyseal tibia fractures (OTA/AO 42 A, B, C) treated with intramedullary nailing (IMN) in one geographic cohort using nonsteroidal anti-inflammatory drugs (NSAIDs) for post-operative pain control to that of another geographic cohort using opioid medications. The groups represent differing cultural approaches to post-operative pain control. We hypothesized there would be no difference in healing time.MethodsTibia fractures presenting at two level I trauma centers located in different countries between January 1, 2010 and December 31, 2017 were retrospectively screened for enrollment. Fractures classified as OTA/AO 42 A, B, or C that were treated with IMN and had radiographic follow up to union were included. At hospital discharge, one cohort (n = 190) was prescribed NSAIDs and the other (n = 182) was prescribed opioids for pain control. Each analgesic method represented the standard of care for that location. Fracture union was defined as cortical bridging in at least 3 out of 4 cortices on AP and lateral radiographs. The primary outcome was healing time on radiographic evaluation.ResultsThere was no statistically significant difference in healing time between the opioid and NSAID groups: 185 vs 180.5 days respectively (p = 0.64). Both groups had similar mean age. Student t-tests were run to compare rates of tobacco use, diabetes mellitus (DM), open fractures, and polytrauma between the two groups. The opioid cohort had statistically significant higher rates of tobacco use, DM, and polytrauma. The NSAID cohort, however, had a larger number of open fractures.ConclusionThe difference in healing time between the NSAID and opioid groups was not statistically significant. The deleterious effect of NSAID use on fracture healing has been debated for decades. Numerous animal studies have supported this theory; however, high quality clinical studies in humans have not provided convincing evidence to substantiate this negative effect. Our study suggests that NSAIDs may be used safely and effectively in the acute phase of fracture healing without significantly increasing the risk of delayed union or nonunion. Prospective randomized studies are necessary to rule out the negative effect of NSAIDS on bone healing.Copyright © 2018 Elsevier Ltd. All rights reserved.

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