Autogenous bone grafts are frequently in use in the ﬁeld of reconstructive upper extremity surgery. Cancellous bone grafts are applied to traumatic osseous defects, nonunions, defects after the resection of benign bone tumors, arthrodesis, and osteotomy procedures. Cancellous bone grafts do not only have beneﬁts such as rapid revascularization, but they also have mechanical advantages. Despite the proximity to the primary surgical ﬁeld, cancellous olecranon grafts have not gained the popularity they deserve in the ﬁeld of reconstructive hand surgery. In this study, the properties, advantages, and technical details of harvesting cancellous olecranon grafts are discussed.