In Aalborg — during 20 months — 93 cases of simple and radical mastoidectomy have been done for acute and chronic otitis media. In the material the chronic cases dominate, especially the very chronic.Totally 43 simple and 50 radical mastoidectomies of varying radicality have been made, cholesteatoma was found in 31 cases (33%), fistula of the external canal in 11 cases (12%) and in 52 cases (56%) the ossicular chain was found interrupted most often by ostitic destruction of crus longum incudis.Great care has been made to remove ostitic bone as thoroughly as possible. In all but 3 cases a muscle obliteration of the cavity has been done. In 83 cases was used a retroauricular muscle flap a little modified after Palva's method. In 3 cases an anteriorly based flap from the temporal muscle and in 4 cases a combination of different muscle flaps were used. The material was evaluated 1–22 months after the operation. It is concluded that muscle obliteration of the cavity after Palva is an easy and technically attra...
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