Broken bones, if returned to their original position, can heal in children and those close to them in age, due to the presence of a remnant of their original strength, but in the years of adolescence and later they do not heal and a certain growth of cartilaginous substance develops on them , which joins the edges of the bone, just as a coppersmith solders copper and other metals with two leads to join them.
The bone of the shoulder most stubbornly resists fusion, then the forearm. The collarbone, when it is fractured inwardly, is difficult to cure with the worst fracture of the flint - a fracture of the lower flint, as was said in relation to dislocation, as for the hip and tibia, this is easier, since the fusion does not prevent them from straightening.
Organs vary in terms of fusion time. So, for example, the nose grows together, as they say, in ten days, the ribs - in twenty, the elbow and what is close to it - in thirty - forty days, and the thigh - in fifty, but sometimes it drags on for a long time, so that the hip takes three or four months or longer to heal. If an organ deviates towards the abdomen due to an error in fusion, this is much better than if it deviates towards the back and the deviation occurs in the direction of the greatest burden.
The reasons why the bone does not heal are excessive watering, frequent loosening and tightening of bandages, or haste in movements, as well as the paucity of blood in general, or the paucity of viscous blood in the body, which is why fractures rarely heal in people with a bilious nature and in those recovering. One of the signs of fusion is the appearance of blood flowing like an excess expelled by nature due to the abundance of matter directed to the fracture.