A modified radical operation on the mastoid was devised with the idea of removing the diseased bone in selected cases of chronic suppurative otitis media and conserving or improving the hearing by leaving undisturbed the membrana tympani and the ossicles.
Early in the nineties, soon after the introduction of the radical operation, Panse, Scheibe and Jansen were the first who made any attempt to preserve the ossicles. In 1897, Stacke recommended their preservation, and later Siebenmann several times made the same recommendation. Stacke's first case was reported in 1895, and the observations were published in 1897; in 1911, he1 wrote of his method of operation, giving the indications and technic. In 1909, Bondy2 reported having performed the operation on a number of patients and enumerated his ideas of the indications and his operative steps. In 1912, Bárány3 published a report on "Conservative Radical Operation
SMITH CH. THE MODIFIED RADICAL OPERATION ON THE MASTOID. Arch Otolaryngol. 1929;9(2):135–153. doi:10.1001/archotol.1929.00620030149002