Book 8
4
But for whatever cause this treatment is necessary, if the scalp has not been laid open sufficiently, it must be incised more widely until the injury is well in view. In doing so we must see that none of the fine inner membrane covering the skull, under the scalp, remains over the bone; for whenever this is lacerated by the chisel or trepan it causes severe fevers with inflammations, and so it is better to raise it wholly off the bone. If there is a cut as part of the wound we must take it as it is; if we have to make it, the best incision is generally that which is formed by two lines in the shape of the letter X; next the scalp is raised by cutting under each of the little tongues. When doing this if bleeding takes place it must be checked by the application of a sponge saturated with vinegar from time to time, also it must be absorbed by swabs of dry lint and the head must be raised higher. There need be no anxiety unless it comes from among the muscles covering the temples; but there also this is the safest method of dealing with it.