“…On the basis of nine studies with nine cohorts consisting of a total of 9,604 patients who underwent spinal fusion, the calculated pooled average rate was 1.8% (median, 2.6%; range, 1.1%–8.3%) [14,15,52,62,103,113,146,164,173]. According to 13 studies consisting of 14 cohorts with a total of 14,835 patients who underwent instrumented spinal fusion, the calculated pooled average rate was 1.4% (median, 2%; range, 0.1%–10%) [6,37,48,77,84,90,101,112,122,126,132,137,160]. The pooled average contribution of S. aureus infections to spinal SSIs was calculated to be 49.3% (median, 50%; range, 16.7%–100%; 2,272 SSIs) [6,7,10–15,32,37,45,47,48,52,53,62,77,84,90,91,101,103,111–113,117,122,126,129,132,137,138,140,146,155,160,164,167,173].…”