The paper examines 91 cases of iliac crest bone samples used in maxillofacial surgery for different purposes and evaluates the immediate and later complications which arise in the site of origin. The most frequent immediate complications are walking difficulties, hematoma, and sensitivity disturbances. Later complications usually include: esthetic deficits (depression of the crestal surface), walking difficulties, and a persistent neurological deficit. The complications observed substantially match those reported in the literature.