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Allograft bone is often employed in various surgical procedures due to its ability to provide structural support and promote bone healing. In the context of this question, the focus is on the common applications of allograft bone.

In spinal fusion procedures, allografts serve to facilitate the fusion of vertebrae by providing a scaffold that encourages new bone formation. Similarly, in dental procedures, allograft materials are used for alveolar ridge augmentation and periodontal defects, aiding in the restoration of bone volume which supports dental implants.

Arthroplasty, which involves the surgical reconstruction or replacement of a joint, may utilize allograft bone, particularly in complex cases where bone loss is significant.

However, in total hip replacements, the primary method of treatment typically involves the use of prosthetic implants rather than bone allografts. While in certain demanding situations or revisions of hip replacements, allograft bone may be utilized, it is generally not the routine or primary choice in standard total hip replacement procedures. The use of allografts in these cases is less common compared to the foundational prosthetic implants designed specifically for this surgical intervention.