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Richard L. Arden, MD; John D. Rachel, MD; Steven C. Marks, MD; Kulmeet Dang, BS

Arch Otolaryngol Head Neck Surg. 1999;125:68-72.

Objective  To study the relationship between soft tissue volume loss and bone resection length following lateral segmental mandibulectomy with plate reconstruction and complication rates.

Design  Retrospective case review of 31 patients (1989-1996), with average follow-up of 37.2 months, who were treated by lateral composite resection for oral cavity and/or oropharyngeal malignancy with primary reconstruction by defect-bridging plates.

Setting  Academic tertiary care referral center.

Interventions  Thirty patients had stainless steel and 1 patient a vitallium reconstruction plate to restore mandibular continuity. Soft tissue defects were repaired with pectoralis myocutaneous flaps (n = 25), skin grafts (n = 4), a radial forearm free flap (n = 1), or primary closure (n = 1). All patients received preoperative (n = 6) or postoperative (n = 25) radiation therapy.

Main Outcome Measures  Overall and hardware-related complications.

Results  All 31 initial soft tissue repairs were successful. Subsequent complications occurred in 14 patients (45%), which included plate exposure (29%), loosened screws requiring hardware removal (29%), fistula (14%), local wound infection (14%), osteomyelitis (7%), and plate fracture (7%). Average time to complication was 7.7 months. Complication rates were 81% for bone defects greater than 5.0 cm, and 7% for those less than 5.0 cm. Bivariate analysis indicated bone resection lengths greater than 5.0 cm to be a significant predictor of both hardware-related (P = .02) and overall complications (P = .005), whereas soft tissue volume resections greater than 240 cm³ were found only to be marginally significant (P = .04) for overall complications.

Conclusion  Extirpative losses involving more than 5 cm of bone, or tissue volume greater than 240 cm³, are associated with unacceptably high complication rates when reconstructed with solid screw stainless steel plates and this warrants consideration of alternative techniques for long-term stability.

From the Department of Otolaryngology–Head and Neck Surgery (Drs Arden, Rachel, and Marks) and the Center for Health Care Effectiveness Research (Mr Dang), Wayne State University School of Medicine, Detroit, Mich.

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