As for diseases from discontinuity, they occur on the skin and are called scratches and abrasions, and they also occur in meat. Recent tears in the flesh that have not festered are called wounds, and those that have festered are called ulcers. Pus appears in them because harmful excesses rush to them, because the wounded places are weak and cannot use and absorb nutrients, which also turn into excess in them. Sometimes a break in continuity that does not occur in the meat is called a wound or ulcer. It occurs, for example, in a bone, breaking it into two parts or large pieces, either crumbling the bone or splitting it lengthwise. The disorder also occurs in cartilage, occurring in all three types, and in nerves. If such a discontinuity occurs across, it is called a cut; if it occurs along and its depth is small, it is called a split; if the depth is great, it is called penetration.
Sometimes the disorder occurs in different parts of the muscles; if it occurs at the end of a muscle, then it is called a rupture, no matter whether it occurs in a nerve or in a tendon; if it occurs across the width of the muscle, then it is called a cut, and if it occurs along the length, and the amount of disruption is small, but the depth is significant, it is called crushing; if there are many violations and they spread wide and deep, this is called fragmentation and tearing. Sometimes crushing, rupture and fragmentation are called any violation that occurs in the 6th middle of the muscle, whatever it may be.
If the disorder occurs in the arteries or veins, it is called a breakthrough. In this case, it either passes across the vessel, and this is called a rupture or divergence, or along the length, and this is called a split. Sometimes the violation occurs in such a way that the mouths of the vessels open, such a violation is called a breakthrough. When a disturbance occurs in an artery and the artery does not close so that blood flows out of it into the surrounding space until that space is filled, then the blood under pressure flows back into the vessel and this is called hemorrhage.' Some people say "hemorrhage" about any internal arterial bleeding.
Know that not every organ allows the disintegration of a single whole. The heart, for example, does not allow it, and with such disintegration death occurs.
The disruption occurs either in the membranes and membranes and is then called a rupture, or occurs between two parts of a complex organ and separates these parts from one another without the organs, which are similar in respect of particles, suffering a break in continuity; this is called separation or dislocation. When this phenomenon occurs in a nerve that has moved away from its place, it is called displacement.
Disruption of continuity also occurs in ducts, which expand as a result, but sometimes not in ducts, and then ducts are created that were not there. When a break in continuity, injury, and the like occurs in an organ of good nature, it quickly becomes fit again, but if it occurs in an organ of bad nature, it sometimes cannot be treated, especially in a body such as the body of people who have dropsy or a learning disorder, or leprosy.
Know that if summer ulcers do not heal for a long time, then it comes to necrosis. In the books of the Canon, which contain a detailed account of diseases, you will find a complete study of the issue of disruption of continuity, which we have moved to this place.