ABSTRACT
Several composite free flaps have been described for use in oromandibular reconstruction.
Particularly in extensive defects, there may be no single flap which combines sufficient
bone stock with thin, pliable, soft tissue. By combining two free flaps, the best
osseous and soft-tissue elements may be independently selected, to yield a result
superior to that achievable with one free flap alone. Thirteen patients underwent
reconstruction of extensive oromandibular defects using the free fibula for mandibular
reconstruction and the free radial forearm flap for oral lining and soft-tissue reconstruction.
Mandibular defects were usually extensive, involving over half of the mandibular contour.
Soft-tissue defects were all complex and involved multiple surfaces of the oral, oropharyngeal,
and nasopharyngeal mucosa. All patients were operated on in the supine position by
two surgical teams (extirpative and reconstructive) working simultaneously. Each free
flap was supplied by its own set of recipient vessels. The mean total operating time
was 12 hr.
Postoperative courses were without mortality or significant morbidity. There were
no flap failures. Soft-tissue and osseous reconstructions healed completely. Aesthetic
contour was judged good to excellent in 11 patients. Soft and solid diets were achieved
in five patients, with six patients on a puree or liquid diet. Oral competence was
present in 11 patients. Speech was excellent to good in six patients and fair in four
patients. The mean follow-up has averaged 18 months. Three patients have died of recurrent
disease, and two of unrelated causes. The remaining eight patients are currently free
of disease.
In combining the free flaps, the best tissue for bone and soft-tissue reconstruction
was selected independently. The two-team approach avoided excessive operating time
and operating team fatigue. The added degree of freedom provided by the two free flaps
with their independent pedicles made insetting easier, compared to working within
the limitations of a single composite flap. For extensive oromandibular defects, the
simultaneous free fibula and radial forearm free flaps provided ideal osseous and
soft-tissue reconstruction, with acceptable operating times and reasonable functional
results.