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Potential Donor Rotational Bone Grafts Using Vascular Territories in the Foot and Ankle
Brett J. Gilbert, MD1; Frank Horst, MD1; James A. Nunley, MD1
1 Duke University Medical Center, Box 2923, Durham, NC 27710. E-mail address for J.A. Nunley: nunle001@mc.duke.edu
View Disclosures and Other Information
In support of their research or preparation of this manuscript, one or more of the authors received grants or outside funding from the American Orthopaedic Foot and Ankle Society and the Piedmont Orthopaedic Foundation. None of the authors received payments or other benefits or a commitment or agreement to provide such benefits from a commercial entity. No commercial entity paid or directed, or agreed to pay or direct, any benefits to any research fund, foundation, educational institution, or other charitable or nonprofit organization with which the authors are affiliated or associated.
Investigation performed at Duke University Medical Center, Durham, North Carolina

The Journal of Bone and Joint Surgery, Incorporated
J Bone Joint Surg Am, 2004 Sep 01;86(9):1857-1873
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Background: An improved understanding of the extraosseous and intraosseous blood supply of the distal aspect of the tibia, distal aspect of the fibula, cuboid, and cuneiforms should identify vascular territories that would enable surgeons to perform rotational vascularized pedicle bone-grafting procedures in the foot and ankle.

Methods: We investigated the blood supply of twenty cadaveric lower extremities using two vascular injection techniques. In order to define the extraosseous and intraosseous arterial anatomy in this region, ten specimens were sequentially subjected to injection with Batson's compound, soft-tissue digestion, and bone-clearing according to a modified Spalteholz technique. To further characterize the extraosseous vascular anatomy, the other ten specimens were injected with latex and dissected.

Results: We identified a consistent and previously unnamed blood supply to the distal aspect of the tibia, distal aspect of the fibula, cuboid, and cuneiforms. Four vessels, each present in all of our specimens, provided distinct vascular territories to bone. A branch of the proximal lateral tarsal artery supplied a consistent vascular territory in the cuboid with an average of fifteen nutrient vessels. Similarly, a branch of the distal medial tarsal artery to the first cuneiform supplied an average of nine nutrient vessels superior to the tibialis anterior tendon insertion. A branch of the anterior lateral malleolar artery to the fibula supplied an average of seven nutrient vessels to the lateral malleolus. A branch of the distal lateral tarsal artery provided the midsection of the third cuneiform with an average of seven nutrient vessels. In the latex-injected specimens, harvesting of the vascularized pedicle bone grafts designed from these data demonstrated their anatomic plausibility and arcs of rotation.

Conclusions: Four new rotational vascularized pedicle bone grafts have been identified in the foot and ankle. These grafts were present in all of our specimens, were well vascularized, had wide arcs of rotation, and were relatively easy to harvest.

Clinical Relevance: These new rotational vascularized pedicle bone grafts should enhance the ability of the surgeon to treat a variety of problems in the foot and ankle.

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    These activities have been planned and implemented in accordance with the Essential Areas and policies of the Accreditation Council for Continuing Medical Education (ACCME) through the joint sponsorship of the American Academy of Orthopaedic Surgeons and The Journal of Bone and Joint Surgery, Inc. The American Academy of Orthopaedic Surgeons is accredited by the ACCME to provide continuing medical education for physicians.
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