Commentary. Avicenna condenses all the information contained in the authors who preceded him. He sets out with stating that the class of medicines which are applicable in such cases are the abstergents; of which he enumerates verdigris, stavesacre, the scales of copper, and even arsenic. Among the less active ingredients he mentions, like our author, the fat of asses. We need not give extracts from the other authorities, as no one has treated of this case so fully as Avicenna.
SECT. XLVIII.—ON SINUOUS ULCERS.
When the skin adjacent to an ulcer is not united with the parts below, we call such a complaint a sinus. When, therefore, the sinus extends upwards, the ichor readily flows out from the sore, and adhesion easily takes place; but when it extends downwards the ichor by remaining within corrodes the continuous parts, and unless you first make an incision for its discharge, you will be able to effect nothing; for the sores can neither be incarnated nor the parts made to unite. But if the sinus is in any of the limbs, as the arms or legs, one may produce adhesion without a counter-division by putting the limb in a declining position. Thus when the sinus is in the arm, and the mouth of the sore is near the elbow, by placing the hand in an elevated position, you will render the discharge from the ulcer below easy. And when the sinus is in the thigh, and has its outlet near the knee, you must make the position declining by putting a soft pillow below the back part of the knee, so that the groin may be in a lower position than the knee; and if the sinus does not require incarnation, forthwith by means of a straight and hollow pipe having a bladder attached to it, syringe it with honey so diluted with water that one could drink it, in order to clear away the ichor from the sinus. For promoting adhesion when about to take place, do it with wine, or wine and honey, and then proceed to the agglutinating medicine. But if the sinus being hollow requires incarnation, first inject a little of the composition from dried paper with much rose-oil, then plug up the mouth of it with charpie, and afterwards the plaster of iris, or of Machærion, or of some such, may be melted with liquid rose-cerate, and injected in like manner. If the sinus is moderately incarnated you may apply some of the agglutinating medicines, as if you were curing a case of recent bloody wound. Such are those called the barbarous, dichromos, and gilvus; and more especially that prepared from the oil of palma Christi and the metals without wax which is called the dun plaster of Galen, is applicable. After the application of the medicine, a recent sponge out of wine and honey, or wine alone, is to be put on particularly in a soft manner, and the bandaging is to commence at the bottom of the sinus and end at its orifice. The folds of the bandage should bind the bottom of the sinus firmly, yet so as not to occasion pain, but ought to be gradually relaxed towards its orifice; and the plaster which is put on should be so cut as to leave an opening at the orifice for the escape of the matter, but another small plaster of the same materials should be applied to it in a loose state, so as to favour the discharge. This is to be left on till the bandages are loosed, which is to be done on the third day, when they are to be taken off and changed, but the application along the sinus is to be left. You may judge whether the bottom of the sinus has adhered, from observing if the matter be small and well concocted, or if there be no discharge at all; and moreover if there be no sensible pain along the sinus nor swelling, but the whole part is contracted, dry, and free from pain. But if you see a little well concocted pus at the orifice, you may still more confidently entertain good hopes. If on the second or third day a thin ichor be discharged from the sinus, you need not despair that adhesion has taken place, for often the strength of the medicine squeezes out from the parts below a thin fluid, which being discharged the parts become dry and adhere. But if on the third or fourth day from the commencement the matter appear unconcocted as it runs from the opening, you may be sure that the sinus has not adhered, and you must persevere with the same application. When owing to the moisture of the part it falls off, as is not unlikely, it will not be improper to make some change in the medicine itself.
On sinuous ulcers with a thin covering of skin. When the abscess is too long opened, owing either to the unskilfulness of the surgeon, or the timidity of the patient, the skin which lies over it becomes thin and ragged, and it cannot be removed, then after the syringing which has been described, we must have recourse to an agglutinating application of a humid consistence, but of desiccative properties, such as that from chalcitis called phœnicinum, diluted with old oil, so as neither to be very hard nor of such a consistence as not to stain the finger; and afterwards it is to be mixed with moderately old wine, and applied in a circular form with corresponding bandaging. To skin in this ragged state honey, as was said, is not one of the least proper applications when boiled to the consistence of a plaster and applied. It will be better, however, if after spreading it on the rag you sprinkle over it from a sieve some myrrh finely pulverized, or aloes, or frankincense, or all of these together. I have also found the lesser centaury a wonderful application for the same purpose; next to it is comfrey, after which is the root of the Illyrian iris, and after these is the flour of tares. Sometimes during the process of boiling we sprinkle these upon the honey when the vessel is about to be taken off from the fire. It is better, however, to do so after it is taken off, and then it is to be stirred about, and when it becomes tepid applied to the sinus, and bandaged as aforesaid.
Commentary. Similar directions are given by Galen and Aëtius, but upon the whole those of our author are superior; and as those of the other two supply no additional information, it will be unnecessary to multiply extracts from them. (See Galen, Therap. ad Glauc. ii.)
Actuarius, in like manner, briefly directs that unless the sinus open downwards, it shall be cut open and dressed with an agglutinative application. You may think well of the case, he adds, when the part is dry and free from pain, or when only a little well-concocted pus is discharged from it.
In the translations of the Arabians, the sinus is described by the names of absconsio and caverna. Avicenna states that the sinus differs from the fistula in having a larger cavity, and its edges not being indurated. He lays down very correct rules of treatment, but they are all copied from Galen. Thus he directs, when the orifice of the sore is above the cavity of the sinus, that it should be cut open; or, if this cannot be conveniently accomplished, he recommends us to introduce a tent smeared with some incarnant or detergent application. Upon the authority of Dioscorides he recommends the lesser centaury in such cases. His directions for the application of the bandages are similar to those of our author.
Celsus, and other of the ancient authorities, do not treat of the sinus separately from the fistula.
SECT. XLIX.—ON FISTULA.
Fistula is a callous sinus formed for the most part from abscesses, and deriving its appellation from the pipes of reeds (fistulæ). If, therefore, it terminate with a bone, it cannot be cured without a surgical operation, unless in process of time a scale of the bone come off spontaneously. But if it does not terminate with a bone, it is to be cured by the applications for removing callosities, and the agglutinative medicines. The applications for removing callosities are such as these: the root of spondylium scraped around and applied removes the callus of fistulæ. And in like manner black hellebore applied removes the callus in two or three days; also lees of oil boiled and injected; sori in a crude state, or burnt and injected with some diluted wine, or sori and crocomagma with hydromel. Or make collyria by mixing elaterium with turpentine, and apply. Or syringe with the juice of the root of laserwort. This melts down the callus: of verdigris, dr. xij; of ammoniac, dr. ij; mix with vinegar, and form into an oblong collyrium.