Trepanation

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Trepanation

 

(also trephination), in medicine, the surgical section of the medullary cavity of a bone. The operation is performed with special instruments, including a trephine (or crown saw), forceps, and gouges. In former usage, “trepanation” referred only to the surgical opening of the cranial cavity to remove a brain tumor or hematoma, for example, or to apply a ligature to an injured vessel. In modern medical practice, trepanation is also performed on the tubular bones in cases of osteomyelitis, and on the mastoid in mastoiditis. Dental trepanation is the surgical formation of an opening through the gum and bone of a tooth. Corneal trepanation is the surgical cutting of the sclera. Trepanation is also used for the withdrawal of bone marrow for examination, as in sternal biopsy.

References in periodicals archive ?
6) However, a subsequent evaluation of the safety of FST with standard frontal trephination instruments of 7 mm in length revealed no significant difference between sinus depth at various distances (5, 10, and 15 mm) from the midline.
When the trephination procedure was performed, the evacuated fluid may have been diagnostic; however, it was not submitted for cytologic examination.
Rasping, shaving, trephination, and synovial fold abrasion should be used liberally and aggressively to enhance the healing potential of the repair.
Indeed, an Italian group has reposed an example of trephination performed in the skull of a child during the time of Galen.
They compared the conduit to trephination and repair in 50 dogs.
Trauma, including trephination and amputation, is discussed in chapter 8.