Histologic analysis of prefabricated, vascularized bone grafts: an experimental study in rabbits

J Oral Maxillofac Surg. 2000 Mar;58(3):292-5; discussion 296. doi: 10.1016/s0278-2391(00)90056-9.

Abstract

Purpose: The purpose of this study was to investigate the cellular quality of prefabricated bone grafts.

Materials and methods: Small pieces of iliac bone were placed around the neurovascular bundle on the dorsal aspect of the ear of 11 one-month-old baby rabbits to create a prefabricated vascularized graft. In five animals, the prefabricated bone grafts were harvested for histologic examination 12 months later. In a second group of 6 rabbits, the prefabricated bone grafts, with the neurovascular bundle as a pedicle, were transferred after 30 days to a defect created by removing 1 cm of the midportion of zygoma on the right side of the face. The transferred bone was removed for histologic examination 11 months later.

Results: In both groups, microscopic examination showed the presence of a rich, vascular network and similar histologic characteristics to those of normal iliac bone.

Conclusion: The findings support the concept that prefabricated bone grafts are a potentially useful source for bony reconstruction.

MeSH terms

  • Animals
  • Bone Transplantation / methods*
  • Ear, External / blood supply
  • Ear, External / innervation
  • Plastic Surgery Procedures
  • Rabbits
  • Surgical Flaps / blood supply*
  • Zygoma / surgery