segmental mandibulectomy
Surgical removal of a continuous segment of the mandible including the tooth-bearing portion. Distinguished from marginal mandibulectomy by involving the full thickness of the bone.
Full Definition
A surgical procedure involving the complete removal of a continuous segment of the mandible, including both cortical plates and the cancellous bone between them. This procedure is typically performed for malignant tumors that have invaded the mandible or for extensive benign lesions. Unlike marginal mandibulectomy, which preserves the inferior border of the mandible, segmental mandibulectomy removes the full thickness of the bone. The procedure often requires immediate or delayed reconstruction with bone grafts or microvascular free flaps to restore mandibular continuity and function. The extent of resection depends on tumor margins and the need for adequate surgical clearance.
Usage
Usage note: Always specify whether reconstruction was performed and the type of reconstruction used.
In Context
- "The patient required segmental mandibulectomy with immediate fibula free flap reconstruction following invasion of the mandible by squamous cell carcinoma." — Surgical report
- "Postoperative imaging confirmed successful healing of the segmental mandibulectomy site with good integration of the bone graft." — Follow-up clinical note