. A Reference handbook of the medical sciences : embracing the entire range of scientific and practical medicine and allied science. and placed at H, by which g portion of the bone would have been .1 ipct ill operation is no more dangerous than the amputation of afinger with the same precautions. The condition which trephining is tomake an opening through which leverage can be exertedand instruments introduced. In order to use it to advan- necessitates the operation constitutes the main element of tage it must therefore be planted on a rigid and unyield- 246 REFERENCE HANDBOOK OF THE MEDICAL S
. A Reference handbook of the medical sciences : embracing the entire range of scientific and practical medicine and allied science. and placed at H, by which g portion of the bone would have been .1 ipct ill operation is no more dangerous than the amputation of afinger with the same precautions. The condition which trephining is tomake an opening through which leverage can be exertedand instruments introduced. In order to use it to advan- necessitates the operation constitutes the main element of tage it must therefore be planted on a rigid and unyield- 246 REFERENCE HANDBOOK OF THE MEDICAL SCIENCES. ing bony surface. The exigencies of the case can alonemake it clear just where this spot may be. Unless it beabsolutely unavoidable, the trephine should not be ap-plied in the middle line (over the superior longitudinalsinus), nor over the course of any of the large sinuses orvessels, , the middle meningeal. The instrument isprovided with a centre-pin which is thrust forward n lit-tle beyond the level of the teeth so as to secure accurateimplantation and prevent sliding. A good way to begin.
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectmedicine, bookyear188
