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Chapter 22 - Famona Site

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4. Hypopharynx.5. Neck skin (and opposite neck).6. Mandible and soft tissue.7. Esophagus.1. Sacrifice of the accessory nerve.2. Bulkiness.Drawbacks3. Donor site may require a skin graft.4. Often the base of the flap is too thick for primary intraoral covering and requiresa controlled orocutaneous fistula.Pectoralis Major (PM)AnatomyThis broad, flat, and fan-shaped muscle has its origin from the medial portion of theclavicle (horizontal fibers), the sternum, and the upper six costal cartilages. The fibers, afterreaching maximum span over the chest wall, converge into a large tendon that attaches to thelateral tip of the bicipital groove of the humerus.1. Thoracoacromial artery.Arterial Supply2. Lateral thoracic artery (nondominant).1. Medial pectoral nerve.2. Lateral pectoral nerve.Nerve SupplyPM ActionThe PM muscle bundles adduct the arm and medially rotate it. The clavicular fibersassist in the flexion of the arm.14

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