Operative surgery . ch occasion. If anerve be tied in, the patient may be tor-mented by pain, which may not cease evenwith the disappearance of the constrict-ing agent. Knots.—The security of the ligature depends very much on the kind ofknot employed in the tying. All knots are insecure unless carefully surgeons or the friction hnot is formed by making two turnsof the ligature at the first loop instead of one (Fig. 113). It will notslip if it has been drawn tightly; it is wisely employed in tying a ves-sel beyond the sightof the surgeon, be-cause then the firsthalf of a reef knotmay s
Operative surgery . ch occasion. If anerve be tied in, the patient may be tor-mented by pain, which may not cease evenwith the disappearance of the constrict-ing agent. Knots.—The security of the ligature depends very much on the kind ofknot employed in the tying. All knots are insecure unless carefully surgeons or the friction hnot is formed by making two turnsof the ligature at the first loop instead of one (Fig. 113). It will notslip if it has been drawn tightly; it is wisely employed in tying a ves-sel beyond the sightof the surgeon, be-cause then the firsthalf of a reef knotmay slip without hisknowledge, therebyresulting in an im-perfect closure of thevessel. It is properto say, however, thatwhen this knot is supplemented by turns, two should be employed, as a singleturn tends to cause relaxation of the first two and thus lessens its security. It sometimes happens, when a silk ligature is saturated with blood orother fluid, that the first half of the knot can not be drawn as tightly as it. Fig. 113.—Surgeons knot.
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