Bone Pate for Mastoid Obliteration after Canal Wall Down Mastoidectomy

  Objective  To investigate the clinical outcome of bone pate for mastoid obliteration after canal wall down mastoidectomy.

  Methods  The clinical data of 12 patients who had undergone canal wall down mastoidectomy followed by bone pate obliteration in Peking Union Medical College Hospital from October 2013 to February 2014 were retrospectively analyzed. The post-operative morphologies of tympanic membranes and mastoid cavities were observed, and the complete reepithelialization time and improvement of hearing were analyzed.

  Results  The mastoid cavities were completely reepithelialized in all 12 patients. The morphologies of tympanic membranes were nearly normal. The volumes of mastoid cavities were significantly reduced. The mean time of complete reepithelialization was 29.9 days. The air-bone gap value increased by (11.7±1.8) dB after the operation in 8 patients who had undergone hearing reconstruction.

  Conclusions  Mastoid obliteration with bone pate after canal wall down mastoidectomy is a simple and convenient procedure that can easily make the mastoid cavity be well-shaped and reepithelialized, shorten the healing time, and achieve good hearing outcome.