Spine
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This study analyzed bony features of the posterior ilium and relevant vital structures using cadavers and dry ilium specimens. ⋯ The ideal area of the posterior ilium for bone graft harvesting was found in Zone 1. Zones 2 or 3 may be considered it a greater quantity of cancellous bone graft is required; however, the risk of injury to the sacroiliac joint and superior gluteal vessels in these zones is increased.