Boban M. Erovic
Surgical removal of malignant head and neck tumors leads to considerable cosmetic and functional changes in most patients, that not only has a decisive influence on the patient’s quality of life, but also their social environment. The goal of reconstruction, critical structures and the technical feasibility of the proposed procedure must be discussed and planned in detail with the patient and coordinated with the patient’s general condition. The principle of ´defect-oriented´ reconstruction applies first tumor resection followed by reconstruction. After surgery functional units have to be reconstructed in addition to the defect, using either regional or free tissue flaps. Free flaps enable a three-dimensional restoration of defects but should also be able to replace skin, muscle tissue, bones, cartilage, or tendons. In addition, size, volume, consistency and vascular pedicle length of the tissue to be transferred must be taken into account. Defects of the facial area must be reconstructed with skin flaps that have a comparable skin thickness and pore density, similar hair growth direction and, above all, skin colour. The serratus anterior free flap fulfils in most cases these requirements because it can be harvested as a sole muscle flap or as a musculocutaneous or costomusculocutaneous flap. When reconstructing parts of the oral cavity a serratus anterior flap including one or two fingers can be harvested. For larger defects, where more volume and surface area are required from the flap, a myogenous or musculocutaneous flap including 4-5 fingers can also be used. When harvesting a musculocutaneous flap the morphology in regards to colour, thickness, pores and hair is very close to the skin of the face and neck. Small bone defects after mandibular resection can be reconstructed with a combined rib - serratus muscle.
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