Radial versus circumferential incision in myringotomy and tube placement.

Pressure equalization tubes are a well-recognized treatment for persistent otitis media with effusion and recurrent acute otitis media. Ideally, the tube should remain in place until the Eustachian tube function returns. Efforts to improve the functional life expectancy of tubes have concentrated on tube design with little attention directed at modification of the surgical technique. Some authors have noted that a radial incision offers theoretical advantages over a circumferential incision. A randomized study comparing radial and circumferential incisions in myringotomy with tube placement was conducted. Two hundred and twenty-eight patients had a circumferential incision performed in one ear and a radial incision in the opposite ear. On follow-up examinations the tube position and time to extrusion were noted. Using the sign test, there was no statistical difference in extrusion rates between the two groups. This study does not support the theoretical advantages espoused in the literature.