As with all other medical procedures, complications can occur in the surgical treatment of bones. Numerous X-ray and CT images illustrate the imaging diagnostics of the most common early and late complications in osteosynthetic care: inadequate repositioning, primary material misplacement and secondary dislocation, iatrogenic fissures or fractures during implant insertion, nerve injury, vascular injury with bleeding, cement leakage, infection, material migration, material loosening, material breakage, healing in malposition, pseudarthrosis (atrophic, hypertrophic pseudarthrosis, infective pseudarthrosis), avascular necrosis, post-traumatic arthritis, avascular necroses, refracture, dislocation.