Markoe observed a patient of seventy-two, who ruptured both the quadriceps tendons of each patella by slipping on a piece of ice, one tendon first giving way, and followed almost immediately by the other. There was the usual depression immediately above the upper margin of the patella, and the other distinctive signs of the accident. In three months both tendons had united to such an extent that the patient was able to walk slowly. Gibney records a case in which the issue was not so successful, his patient being a man who, in a fall ten years previously, had ruptured the right quadriceps tendon, and four years later had suffered the same accident on the opposite side. As a result of his injuries, at the time Gibney saw him, he had completely lost all power of extending the knee-joint. Partridge mentions an instance, in a strong and healthy man, of rupture of the tendon of the left triceps cubiti, caused by a fall on the pavement. There are numerous cases in which the tendo Achillis has recovered after rupture,--in fact, it is unhesitatingly severed when necessity demands it, sufficient union always being anticipated. None of these cases of rupture of the tendon are unique, parallel instances existing in medical literature in abundance.
Marshall had under his observation a case in which the femoral artery was ruptured by a cart wheel passing over the thigh, and death ensued although there were scarcely any external signs of contusion and positively no fracture. Boerhaave cites a curious instance in which a surgeon attempted to stop hemorrhage from a wounded radial artery by the application of a caustic, but the material applied made such inroads as to destroy the median artery and thus brought about a fatal hemorrhage.
Spontaneous fractures are occasionally seen, but generally in advanced age, although muscular action may be the cause. There are several cases on record in which the muscular exertion in throwing a stone or ball, or in violently kicking the leg, has fractured one or both of the bones of an extremity. In old persons intracapsular fracture may be caused by such a trivial thing as turning in bed, and even a sudden twist of the ankle has been sufficient to produce this injury. In a boy of thirteen Storrs has reported fracture of the femur within the acetabulum.
In addition to the causes enumerated, inflammation of osseous tissue, or osteoid carcinoma, has been found at the seat of a spontaneous fracture.
One of the most interesting subjects in the history of surgery is the gradual evolution of the rational treatment of dislocations.
Possibly no portion of the whole science was so backward as this.
Thirty-five centuries ago Darius, son of Hydaspis, suffered a simple luxation of the foot; it was not diagnosed in this land of Apis and of the deified discoverer of medicine. Among the wise men of Egypt, then in her acme of civilization, there was not one to reduce the simple luxation which any student of the present day would easily diagnose and successfully treat. Throughout the dark ages and down to the present century, the hideous and unnecessary apparatus employed, each decade bringing forth new types, is abundantly pictured in the older books on surgery; in some almost recent works there are pictures of windlasses and of individuals making superhuman efforts to pull the luxated member back--all of which were given to the student as advisable means of treatment.
Relative to anomalous dislocations the field is too large to be discussed here, but there are two recent ones worthy of mention.
Bradley relates an instance of death following a subluxation of the right humerus backward on the scapula It could not be reduced because the tendon of the biceps lay between the head of the humerus and a piece of the bone which was chipped off.
Baxter-Tyrie reports a dislocation of the shoulder-joint, of unusual origin, in a man who was riding a horse that ran away up a steep hill. After going a few hundred yards the animal abated its speed, when the rider raised his hand to strike. Catching sight of the whip, the horse sprang forward, while the man felt an acute pain and a sense of something having given way at his shoulder. He did not fall off, but rode a little further and was helped to dismount. On examination a subcoracoid dislocation of the head of the humerus was found. The explanation is that as the weight of the whip was inconsiderable (four ounces) the inertia of the arm converted it into a lever of the first order. Instead of fulfilling its normal function of preventing displacement, the coraco-acromial arch acted as a fulcrum. The limb from the fingers to that point acted as the "long arm," and the head and part of the neck of the humerus served as the "short arm." The inertia of the arm, left behind as it were, supplied the power, while the ruptured capsular ligament and displacement of the head of the bone would represent the work done.
Congenital Dislocations.--The extent and accuracy of the knowledge possessed by Hippocrates on the subject of congenital dislocations have excited the admiration of modern writers, and until a comparatively recent time examples of certain of the luxations described by him had not been recorded. With regard, for instance, to congenital dislocations at the shoulder-joint, little or nothing was known save what was contained in the writings of Hippocrates, till R. M. Smith and Guerin discussed the lesion in their works.
