Assertion: amputation's edge | /r/AtLocation | the skin
Facets:
value: perpendicularly
type: DEGREE
Source sentences:
text: The generality of surgeons, very rightly considering this as one of the most painful parts of the operation, do it with as much quickness as possible, and therefore carry the knife all round the member with one sweep, the hand which holds the knife being carried round under the limb until the edge can be placed perpendicularly on the skin covering the extensor muscles.