To describe the surgical technique for power-assisted adenoidectomy and review the safety and effectiveness of the procedure. Retrospective review. Power-assisted adenoidectomy uses a curved microdebrider shaver blade that conforms to the nasopharynx. The action of the shaver is controlled through visualization using a laryngeal mirror. Power-assisted adenoidectomy is started high in the nasopharynx, with resection beginning in the most superior aspect of the adenoid pad and moving inferiorly to the base of the pad. The cutting edge of the microdebrider remains in view continuously. Between 1998 and 2001, we performed power-assisted adenoidectomy in 677 children and conducted both retrospective and prospective reviews of our experience. No instances of excess intraoperative blood loss (>150 mL), postoperative hemorrhage, velopharyngeal insufficiency, or other complication associated with adenoidectomy have occurred. We have consistently demonstrated that power-assisted adenoidectomy is precise, rapid, and safe.