Fast healing response in inter-trabecular healing can be attributed to osteoid forming simultaneously throughout the entire volume of the injured tissue. Regeneration may resolve in as little as four weeks if the distance between two fractured parts is minimal , as response to trauma extends only as far as 2 millimeters from the fracture (Figure ). The depth of bone necrosis reaches up to 100 micrometers . Contrary to shaft fractures where healing may reach substantial gaps, filling of a defect in trabecular bone can be severely delayed or ceased at all if the gap width is well over few millimeters 2221 . This is why this healing mechanism only partially observed in cortical bone healing while being the major healing process for trabecular bone.