Diagnostic and therapeutic approach to spondylodiscitis in Spanish children through the RIOPed network: evaluation before and after the publication of the national consensus document.

Objective: Pediatric spondylodiscitis (PSD) is an uncommon condition, for which there are no specific international clinical guidelines. Factors related to complications have not been stablished. Our aim was to describe clinical and epidemiological characteristics of PSD, to analyze factors associated with complications and to evaluate adherence to the recommendations of the Spanish National Consensus Document (NCD) for the diagnostic and therapeutic approach to acute osteoarticular infections.

Material And Methods: Ambispective, multicenter, national study of two PSD cohorts: historical (2008-2012) and prospective (2015-2020, after publication of NCD). Patients with diagnosis of PSD were included. Demographic, clinical, microbiological and radiological data were recorded. Factors related to the development of complications were analized by logistic regression. Comparisons between both cohorts were performed.

Results: Ninety-eight PSD were included. In 84.7%, diagnosis was confirmed by magnetic resonance imaging. Microbiological isolation was obtained in 6.1%, with methicillin-sensitive S. aureus as the main etiologic agent. Complications occurred in 18.9%, the most frequent being soft tissue abscess. Of the 8.6% of patients with sequelae, persistent pain was the most common. Comparing cohorts, there was better adherence to NCD treatment recommendations in the prospective one (57.6% vs. 12.9%, p < 0.01), including a reduction in the length of intravenous antibiotic therapy (10 vs. 14 days, p < 0.01).

Conclusions: The evolution of PSD in our series was favorable, with low frequency of complications and sequelae. The adherence to the recommendations of the NCD was high. Studies with larger sample size are needed to establish new recommendations to optimize the approach to these infections.