When a bone tumor affects a child, not only must the surgeon reconstruct the missing bone, the surgeon must also plan for the child's future growth. In these cases, an expandable prosthesis is used.
New implant designs allow for expansion of the prosthesis without a surgical procedure. Using the Repiphysis™ endoprosthesis, the length of the leg can be periodically lengthened by applying an electromagnetic force around the knee. the limb can be lengthened more frequently, with less pain and the child is able to avoid multiple, painful surgical procedures.