The rasp is not a new principle in bone surgery, and its function need not be further expounded here. In numerous operations on the mastoid I have frequently had occasion to use a proper type of rasp, but up to now I have not been able to find the correct instrument.
The mastoid rasp.
The rasp, here pictured, adds another useful instrument to the mastoid armamentarium, and it is not expected to supplant either the Sprat or the Richard curet. It has certain advantages that are lacking in the curet:
1. It is of stronger construction, and is less likely to break during the course of an operation.
2. It has five sharp teeth, and hence requires less effort in its employment.
3. For a similar reason it will retain its sharpness for a greater length of time.
4. It is the instrument of choice in smoothing rough edges
WOLF GD. MASTOID RASP. Arch Otolaryngol. 1932;15(3):443. doi:10.1001/archotol.1932.03570030461014
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