Endoscopic bone graft for delayed union and nonunion.

Nonunion and delayed union are serious consequences in the treatment of fractures. Bone graft has been a mainstay of treatment for nonunion and delayed union. But with rapid development of the endoscopic procedure, bone grafting can be performed after curettage of fibrous tissue around the fracture gap and sclerotic fracture end under direct visual control of the endoscope. This technical note provides procedures for this technique.