Reunion of Digits.—An interesting phenomenon noticed in relation to severed digits is their wonderful capacity for reunion. Restitution of a severed part, particularly if one of considerable function, naturally excited the interest of the older writers. Locher has cited an instance of avulsion of the finger with restitution of the avulsed portion; and Brulet, Van Esh, Farmer, Ponteau, Regnault, and Rosenberg cite instances of reunion of a digit after amputation or severance. Eve's "Remarkable Cases in Surgery" contains many instances of reunion of both fingers and thumbs, and in more recent years several other similar cases have been reported. At the Emergency Hospital in Washington, D.C., there was a boy brought in who had completely severed one of his digits by a sharp bread-cutter. The amputated finger was wrapped up in a piece of brown paper, and, being apparently healthy and the wound absolutely clean, it was fixed in the normal position on the stump, and covered by a bichlorid dressing. In a short time complete function was restored. In this instance no joint was involved, the amputation being in the middle of the 2d phalanx. Staton has described a case in which the hand was severed from the arm by an accidental blow from an axe. The wound extended from the styloid process directly across to the trapezium, dividing all the muscles and blood-vessels, cutting through bones. A small portion of the skin below the articulation, with the ulna, remained intact. After an unavoidable delay of an hour, Staton proceeded to replace the hand with silver sutures, adhesive plaster, and splints. On the third day pulsation was plainly felt in the hand, and on the fourteenth day the sutures were removed. After some time the patient was able to extend the fingers of the wounded member, and finally to grasp with all her wonted strength.
The reproduction or accidental production of nails after the original part has been torn away by violence or destroyed by disease, is quite interesting. Sometimes when the whole last phalanx has been removed, the nail regrows at the tip of the remaining stump. Tulpius seems to have met with this remarkable condition. Marechal de Rougeres, Voigtel, and Ormancey have related instances of similar growths on the 2d phalanx after the loss of the 1st. For several months a woman had suffered from an ulcer of the middle finger of the right hand, in consequence of a whitlow; there was loss of the 3d phalanx, and the whole of the articular surface and part of the compact bony structure of the 2d. On examining the sore, Ormangey saw a bony sequestrum which appeared to keep it open. He extracted this, and, until cicatrization was complete, he dressed the stump with saturnine cerate. Some months afterward Ormangey saw with astonishment that the nail had been reproduced; instead of following the ordinary direction, however, it lay directly over the face of the stump, growing from the back toward the palmer aspect of the stump digit, as if to cover and protect the stump. Blandin has observed a case of the same description. A third occurred at the Hopital de la Charite, in a woman, who, in consequence of a whitlow, had lost the whole of the 3d phalanx of one of the forefingers. The soft and fleshy cushion which here covered the 2d phalanx was terminated by a small, blackish nail, like a grain of spur rye. It is probable that in these cases the soft parts of the 3d phalanx, and especially the ungual matrix, had not been wholly destroyed. In his lectures Chevalier speaks of analogous cases.
In some instances avulsion of a finger is effected in a peculiar manner. In 1886 Anche reported to his confreres in Bordeaux a rare accident of this nature that occurred to a carpenter. The man's finger was caught between a rope and the block of a pulley. By a sudden and violent movement on his part he disengaged the hand but left the 3d finger attached to the pulley. At first examination the wound looked like that of an ordinary amputation by the usual oval incision; from the center of the wound the proximal fragment of the 1st phalanx projected. Polaillon has collected 42 similar instances, in none of which, however, was the severance complete.
It occasionally happens that in avulsion of the finger an entire tendon is stripped up and torn off with the detached member. Vogel describes an instance of this nature, in which the long flexor of the thumb was torn off with that digit. In the Surgical Museum at Edinburgh there is preserved a thumb and part of the flexor longus pollicis attached, which were avulsed simultaneously. Nunnely has seen the little finger together with the tendon and body of the longer flexor muscle avulsed by machinery. Stone details the description of the case of a boy named Lowry, whose left thumb was caught between rapidly twisting strands of a rope, and the last phalanx, the neighboring soft parts, and also the entire tendon of the flexor longus pollicis were instantly torn away. There was included even the tendinous portion of that small slip of muscle taking its origin from the anterior aspect of the head and upper portion of the ulna, and which is so delicate and insignificant as to be generally overlooked by anatomists. There was great pain along the course of the tract of abstraction of the tendon.
Pinkerton describes a carter of thirty-one who was bitten on the thumb by a donkey. The man pulled violently in one direction, and the donkey, who had seized the thumb firmly with his teeth, pulled forcibly in the other direction until the tissues gave way and the man ran off, leaving his thumb in the donkey's mouth. The animal at once dropped the thumb, and it was picked up by a companion who accompanied the man to the hospital. On examination the detached portion was found to include the terminal phalanx of the thumb, together with the tendon of the flexor longus pollicis measuring ten inches, about half of which length had a fringe of muscular tissue hanging from the free borders, indicating the extent and the penniform arrangement of the fibers attached to it. Meyer cites a case in which the index finger was torn off and the flexor muscle twisted from its origin. The authors know of an unreported case in which a man running in the street touched his hand to a hitching block he was passing; a ring on one of his fingers caught in the hook of the block, and tore off the finger with the attached tendon and muscle. There is a similar instance of a Scotch gentleman who slipped, and, to prevent falling, he put out his hand to catch the railing. A ring on one of his fingers became entangled in the railing and the force of the fall tore off the soft parts of the finger together with the ring.
The older writers mentioned as a curious fact that avulsion of the arm, unaccompanied by hemorrhage, had been noticed. Belchier, Carmichael, and Clough report instances of this nature, and, in the latter case, the progress of healing was unaccompanied by any uncomfortable symptoms. In the last century Hunezoysky observed complete avulsion of the arm by a cannon-ball, without the slightest hemorrhage. The Ephemerides contains an account of the avulsion of the hand without any bleeding, and Woolcomb has observed a huge wound of the arm from which hemorrhage was similarly absent. Later observations have shown that in this accident absence of hemorrhage is the rule and not the exception. The wound is generally lacerated and contused and the mouths of the vessels do not gape, but are twisted and crushed. The skin usually separates at the highest point and the muscles protrude, appearing to be tightly embraced and almost strangulated by the skin, and also by the tendons, vessels, and nerves which, crushed and twisted with the fragments of bone, form a conical stump. Cheselden reports the history of a case, which has since become classic, that he observed in St. Thomas' Hospital in London, in 1837. A miller had carelessly thrown a slip-knot of rope about his wrist, which became caught in a revolving cog, drawing him from the ground and violently throwing his body against a beam. The force exerted by the cog drawing on the rope was sufficient to avulse his whole arm and shoulder-blade. There was comparatively little hemorrhage and the man was insensible to pain; being so dazed and surprised he really was unconscious of the nature of his injury until he saw his arm in the wheel.
According to Billroth the avulsion of an arm is usually followed by fatal shock. Fischer, however, relates the case of a lion-tamer whose whole left arm was torn from the shoulder by a lion; the loss of blood being very slight and the patient so little affected by shock that he was able to walk to the hospital.
Mussey describes a boy of sixteen who had his left arm and shoulder-blade completely torn from his body by machinery. The patient became so involved in the bands that his body was securely fastened to a drum, while his legs hung dangling. In this position he made about 15 revolutions around the drum before the motion of the machinery could be effectually stopped by cutting off the water to the great wheel. When he was disentangled from the bands and taken down from the drum a huge wound was seen at the shoulder, but there was not more than a pint of blood lost. The collar-bone projected from the wound about half an inch, and hanging from the wound were two large nerves (probably the median and ulnar) more than 20 inches long. He was able to stand on his feet and actually walked a few steps; as his frock was opened, his arm, with a clot of blood, dropped to the floor. This boy made an excellent recovery. The space between the plastered ceiling and the drum in which the revolutions of the body had taken place was scarcely 7 1/2 inches wide. Horsbeck's case was of a negro of thirty-five who, while pounding resin on a 12-inch leather band, had his hand caught between the wheel and band. His hand, forearm, arm, etc., were rapidly drawn in, and he was carried around until his shoulder came to a large beam, where the body was stopped by resistance against the beam, fell to the floor, and the arm and scapula were completely avulsed and carried on beyond the beam. In this case, also, the man experienced little pain, and there was comparatively little hemorrhage. Maclean reports the history of an accident to a man of twenty-three who had both arms caught between a belt and the shaft while working in a woolen factory, and while the machinery was in full operation. He was carried around the shaft with great velocity until his arms were torn off at a point about four inches below the shoulder-joint on each side. The patient landed on his feet, the blood spurting from each brachial artery in a large stream. His fellow-workmen, without delay, wound a piece of rope around each bleeding member, and the man recovered after primary amputation of each stump. Will gives an excellent instance of avulsion of the right arm and scapula in a girl of eighteen, who was caught in flax-spinning machinery. The axillary artery was seen lying in the wound, pulsating feebly, but had been efficiently closed by the torsion of the machinery. The girl recovered.
Additional cases of avulsion of the upper extremity are reported by Aubinais, Bleynie, Charles, George, James, Jones, Marcano, Belchier, Braithwaite, and Hendry.
Avulsion of the Lower Extremity.—The symptoms following avulsion of the upper extremity are seen as well in similar accidents to the leg and thigh, although the latter are possibly the more fatal. Horlbeck quotes Benomont's description of a small boy who had his leg torn off at the knee by a carriage in motion; the child experienced no pain, and was more concerned about the punishment he expected to receive at home for disobedience than about the loss of his leg. Carter speaks of a boy of twelve who incautiously put the great toe of his left foot against a pinion wheel of a mill in motion. The toe was fastened and drawn into the mill, the leg following almost to the thigh. The whole left leg and thigh, together with the left side of the scrotum, were torn off; the boy died as a result of his injuries.