COMMINUTED FRACTURES.--Comminuted fracture is one in which the bone is shattered or divided into a number of fragments. COMPLICATED FRACTURES.--Complicated fracture is one in which other structures surrounding the bones are injured. GENERAL SYMPTOMS OF FRACTURE.--When a fracture of one or more of the large bones of a limb occurs, symptoms are sure to be well marked. After the accident the animal refuses to touch the foot to the ground and, if compelled to move, does so with great pain and reluctance. There is more or less shortening of the limb, with trembling of the muscles in the vicinity of the injury; deformity, and increased mobility, so that, instead of the natural joints of the limb and the natural, muscular control of their motion, a new joint, over which the animal has no control, is formed where the fracture occurred. As the leg, shortened by the ends of the bones being forced past one another from the muscular contraction which invariably takes place, hangs dependent from the body it swings in an awkward and unnatural manner, permitting the toe and foot to assume positions in their relations to other parts of the body which otherwise would be impossible. If the fractured bone is so situated that the parts may be moved one upon another, a grating sound, known as crepitus, will be heard. GENERAL TREATMENT OF FRACTURES.--When a fracture occurs, the advisability of attempting treatment must first be determined. If the animal is young, valuable, and of reasonably quiet temperament, and the fracture is not too great in extent, the chances of recovery are fair. On the other hand, if the animal should be of little value, irritable, advanced in years, and the fracture is a serious compound or comminuted one, the wiser course would generally be to put the creature out of its misery.