| gamma knife | <radiobiology> A special multi-source irradiation machine which focus a high intesity of irradiation on a small area: it is used as local therapy in especially brain tumours. This is investigational and is not part of the routine array of cancer treatments. (16 Dec 1997) |
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| gamma ray knife | A beam of high energy X-rays. See: radiosurgery. (05 Mar 2000) |
| cartilage knife | A very stiff scalpel-shaped knife used in cutting cartilage. Synonym: cartilage knife, ecchondrotome. Origin: chondro-+ G. Tome, cutting (05 Mar 2000) |
| cautery knife | A knife that sears while cutting, to diminish bleeding. (05 Mar 2000) |
| Graefe's knife | A narrow-bladed knife used in making a section of the cornea. (05 Mar 2000) |
| chemical knife | Term sometimes used for restriction endonuclease. (05 Mar 2000) |
| Merrifield knife | A long, narrow, triangularly shaped knife used in gingival surgery. (05 Mar 2000) |
| ring-knife | A circular or oval ring with internal cutting edge, on the model of the carpenter's spoke-shave, for shaving off tumours in the nasal and other cavities. Synonym: spoke-shave. (05 Mar 2000) |
| clasp-knife effect | Initial increased resistance to stretch of the extensor muscles of a joint that give way rather suddenly allowing the joint then to be easily flexed; the rigidity is due to an exaggeration of the stretch reflex. See: lengthening reaction. Synonym: clasp-knife effect, clasp-knife rigidity. (05 Mar 2000) |
| clasp-knife rigidity | Initial increased resistance to stretch of the extensor muscles of a joint that give way rather suddenly allowing the joint then to be easily flexed; the rigidity is due to an exaggeration of the stretch reflex. See: lengthening reaction. Synonym: clasp-knife effect, clasp-knife rigidity. (05 Mar 2000) |
| clasp-knife spasticity | Initial increased resistance to stretch of the extensor muscles of a joint that give way rather suddenly allowing the joint then to be easily flexed; the rigidity is due to an exaggeration of the stretch reflex. See: lengthening reaction. Synonym: clasp-knife effect, clasp-knife rigidity. (05 Mar 2000) |
| cooled-knife method | The cutting of frozen sections with a knife cooled to a few degrees below the freezing point. (05 Mar 2000) |
| hernia knife | A slender bladed knife, with short cutting edge, for dividing the constricting tissues at the mouth of the hernial sac. Synonym: herniotome. (05 Mar 2000) |
| Humby knife | A knife with a roller and a calibration device to cut skin grafts of different thickness. (05 Mar 2000) |
| spalting knife | A knife used in splitting codfish. Alternative forms: spalding knife. Source: Websters Dictionary (01 Mar 1998) |