Complications of limb-sparing procedures using endoprosthetic replacementsabout the knee for pediatric skeletal sarcomas

Ninety-five percent of bone tumors are now managed with limb-sparing techni ques. For pediatric patients with bone cancer, such limb reconstruction tec hniques often involve the placement of large endoprosthetic devices with th e goal of improving survivors' quality of life. Nevertheless, few radiologi c publications discuss the use of these techniques in children and adolesce nts. This pictorial essay describes the imaging characteristics of the comp lications associated with endoprosthetic devices and discusses the conditio ns that may simulate them.