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  • Title: Tragal perichondrium and cartilage in reconstructive ear surgery.
    Author: Eviatar A.
    Journal: Laryngoscope; 1978 Aug; 88(8 Pt 2 Suppl 11):Suppl 11: 1-23. PubMed ID: 682797.
    Abstract:
    Two hundred and fifty-five ear operations using tragal perichondrium and cartilage for reconstruction are presented. Of these, 108 were myringoplasties, 137 were tympanoplasties with ossicular reconstruction performed by nine different methods, and 10 were tympanoplasties with reconstruction of posterior canal wall defects left by radical mastoid surgery. The method presented in this study of using the tragal perichondrial graft is well suited for myringoplasty and can be used where the drum remnant is very small or the anulus is missing. The natural angle of the tragal perichondrium can take the place of the missing anulus anteriorly, inferiorly or posteriorly. Myringoplasty graft survival at one year follow-up was 92%, and 76% had hearing within 10 db of bone conduction. In tympanoplasty, the tragal perichondrium was used en bloc with its cartilage for reconstruction of the ossicular chain where suited. The malleus was used to reconstruct the ossicular chain in different variations. Other methods used are fully described. At one year follow-up the rate of grafting success for tympanoplasties was 91%, and 78% had hearing within 10 db of bone conduction. A method for reconstruction of the posterior canal wall and tympanoplasty after radical mastoidectomy is presented. It uses tragal cartilage and perichondrium en bloc. At one year follow-up, eight of ten cases operated on by this method had an intact drum and posterior canal wall, one had an intact drum but the posterior canal collapsed into the mastoid, and one had an intact canal wall but the eardrum re-perforated. Nine had postoperative hearing within 10 db of bone conduction. A randomly selected group of 100 tympanoplasties was examined for postoperative gain in hearing according to the speech reception threshold, a more practical criterion of surgical success than 10 db air-bone gap. Although the total number showing improvement was similar to the number gaining hearing within 10 db of pure tone bone conduction (76% vs. 78%), when changes of 5 db were discounted, only 56% were improved (and 33% had a significant gain in hearing).
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