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August 1977

Microsurgical-Neurovascular Anastomoses for Transplantation of Composite Bone and Muscle Grafts,

Author Affiliations

San Francisco

Arch Otolaryngol. 1977;103(8):501. doi:10.1001/archotol.1977.00780250095015

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This 50-page publication describes a controlled study of rib grafts to defects of the mandible in dogs. Eleven animals had microneural and microvascular anastomoses performed in conjunction with the rib graft, while two animals had free rib autografts bilaterally (four grafts without microvascular anastomosis). All animals were subsequently studied using supravital, polychromic bone labeling, angiography, electromyography, and standard histological techniques.

The results reveal that the anastomosed grafts healed more rapidly than did the free grafts. An important feature of the grafts that were transferred with microvascular anastomosis was the preservation of the bony cytoarchitecture as opposed to the "resorption and replacement" mechanism in the free bone grafts. Intercostal muscles underwent near-total atrophy in the free graft group, while those with microneural repair lost only one-half of their muscle mass and retained action potentials on electromyogram testing. The author briefly discusses the advantages of bone grafting with the microvascular technique,

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