Which location is the best source for a bone graft to reconstruct a 10cm continuity defect after mandibular resection?

Which location is the best source for a bone graft to reconstruct a 10cm continuity defect after mandibular resection?

• A. Anterior iliac crest
• B. Posterior iliac crest
• C. Fibula
• D. Radius

Answer: (B)

For reconstructing a 10cm continuity defect after mandibular resection, the posterior iliac crest is often considered one of the best options for a bone graft. The posterior iliac crest provides a significant amount of cancellous and cortical bone, which is essential for providing structural support and promoting healing in a large defect. This area is also relatively easy to access surgically and offers a good compromise between bone quantity and donor site morbidity. Additionally, the posterior iliac crest has a sufficient vascular supply, which can help enhance the healing of the graft once it is placed. Only the fibula may rival the iliac crest in terms of its suitability for creating long segments of bone, but the iliac crest is more commonly practiced and has a lower complication rate related to the harvest site in many cases. While the anterior iliac crest can also serve as a donor site, it typically provides less bone volume than the posterior crest, making it less ideal for larger defects. The radius, although it can be used for grafting, generally offers a smaller amount of bone and is typically used for smaller defects or in cases where the fibula is not appropriate. Thus, the posterior iliac crest stands out as the most favorable choice for an extensive bone

For reconstructing a 10cm continuity defect after mandibular resection, the posterior iliac crest is often considered one of the best options for a bone graft. The posterior iliac crest provides a significant amount of cancellous and cortical bone, which is essential for providing structural support and promoting healing in a large defect. This area is also relatively easy to access surgically and offers a good compromise between bone quantity and donor site morbidity.

Additionally, the posterior iliac crest has a sufficient vascular supply, which can help enhance the healing of the graft once it is placed. Only the fibula may rival the iliac crest in terms of its suitability for creating long segments of bone, but the iliac crest is more commonly practiced and has a lower complication rate related to the harvest site in many cases.

While the anterior iliac crest can also serve as a donor site, it typically provides less bone volume than the posterior crest, making it less ideal for larger defects. The radius, although it can be used for grafting, generally offers a smaller amount of bone and is typically used for smaller defects or in cases where the fibula is not appropriate.

Thus, the posterior iliac crest stands out as the most favorable choice for an extensive bone