No anatomy text specifically describes the course of the sciatic nerve (SN) in the gluteal region in children. Anatomical information is largely derived from cadaveric studies of adults, so accurate anatomical information about the location of the SN in children is required. The aim of this study is to assess the surface anatomy of the SN in children using computed tomography (CT). After excluding studies with pelvic pathology, 75 CT scans were analyzed. Three groups were selected for analysis (0-2, 4-6, and 8-10 years). The position of the SN was measured between the posterior superior iliac spine (PSIS) and the ischial tuberosity (IT) and between the IT and the greater trochanter (GT) using 3-dimensional images. In the 0-2 age group, the SN crossed the middle third of a line between the PSIS and the IT in 94% and the GT and the IT in 80% of cases. In the 4-6 age group, the SN crossed the middle third of a line between the PSIS and the IT in 96% and the GT and the IT in 87%. In the 8-10 age group, the SN crossed the middle third of a line between the PSIS and the IT in 100% and the GT and the IT in 71%. The findings indicate that the SN in children is most accurately located in the middle third along a line drawn from the PSIS to the IT and the GT to the IT. Our study is the first to provide anatomical CT data from living children to guide interventions in the gluteal region.

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The study was designed and coordinated by the Respiratory Effectiveness Group (REG; www.effectivenessevaluation.org; Cambridge, UK) and delivered by Optimum Patient Care (OPC; www.optimumpatientcare.org). Funding: The study was funded by an unrestricted grant from Novartis AG.

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