Final answer:
The item not considered a structural allograft is 'ground corticocancellous' because it is milled into small pieces and used to fill bone defects for osteoconductive purposes. The correct answer is option d.
Step-by-step explanation:
The structural allografts mentioned are typically used in orthopedic surgeries to repair or replace damaged bone. An allograft is a graft of tissue taken from a donor of the same species as the recipient. The femoral cortical strut is used to provide support in cases of large bone deficits or fractures. The iliac crest wedge is often utilized for structural support and fusion in spine surgeries.
The Cloward dowel is a specific type of dowel used in cervical spine surgery named after Dr. Ralph B. Cloward. However, the option ground corticocancellous does not refer to a structural allograft but rather to a type of bone graft that is milled into small pieces and used to fill bone defects. It does not provide structural support but is used for its osteoconductive properties to promote new bone growth.