Rule 2.—Dry and strap with adhesive plaster, if you know how. If not, bandage snugly, beginning with tips of fingers or with toes, and make same pressure all the way up that you do over injury.
Rule 3.—Rest. If ankle or knee is hurt, patient must go to bed.
Conditions, Etc.—A sprain is an injury caused by a sudden wrench or twist of a joint, producing a momentary displacement of the ends of the bones to such a degree that they are forced against the membrane and ligaments surrounding the joint, tearing one or both to a greater or less extent. The wrist and ankle are the joints more commonly sprained, and this injury is more likely to occur in persons with flabby muscles and relaxed ligaments, as in the so-called "weak-ankled." The damage to the parts holding the joint in place may be of any degree, from the tearing of a few fibers of the membrane enwrapping the joint to its complete rupture, together with that of the ligaments, so that the bones are no longer in place, the joint loses its natural shape and appearance, and we have a condition known as dislocation. In a sprain then, the twist of the joint produces only a temporary displacement of the bones forming the joint, sufficient to damage the soft structures around it, but not sufficient to cause lasting displacement of the bones or dislocation.
It will be seen that whether a sprain or dislocation results, depends upon the amount of injury sustained. Since it often happens that the bone entering into the joint is broken, it follows that whenever what appears to be a severe sprain occurs, with inability to move the joint and great swelling, it is important to secure surgical aid promptly. Since the discovery of the X-ray many injuries of the smaller bones of the wrist and ankle joint, formerly diagnosed as sprains by the most skillful surgeons, have, by its use, been discovered to be breaks of the bones which were impossible of detection by the older methods of examination.
Symptoms.—The symptoms of sprain are sudden, severe pain, often accompanied by faintness and nausea, swelling, tenderness, and heat of the injured parts. The sprained joint can be only moved with pain and difficulty. The swelling is due not so much to leaking of blood from broken blood vessels as to filling up of the joint with fluid caused by the inflammation, although in a few days after a severe sprain the skin a little distance below the injury becomes "black and blue" from escape of blood caused by the injury.
Treatment.—Since the treatment of severe sprains means first the discrimination between dislocation, a break of bone, and a rupture of muscle, ligament, or tendon, it follows that the methods herein described for treatment should only be employed in slight unmistakable sprains, or until a surgeon can be secured, or when one is unavailable. Nothing is better than immediate immersion of the sprained joint in as hot water as the hand can bear for half an hour. Following this, an elastic bandage of flannel cut on the bias about three and one-half inches wide should be snugly applied to the limb, beginning at the finger tips or at the toes and carrying the bandage some distance above the injured joint.
In bandaging a part there is always danger of applying the bandage too tightly, especially if the parts swell under the bandage. If this happens, there is increase of pain which may be followed by numbness of the limb and, what is still more significant, coldness and blueness of the extremities below the bandage, particularly of the fingers and toes. In such cases the bandage must be removed and reapplied with less force. If the ankle or knee be sprained the patient must go to bed for at least twenty-four hours, and give the limb a complete rest.
When the wrist or shoulder is sprained the arm should be confined in a sling. In the more serious cases the injured joint should be fixed in a splint before bandaging. An injured elbow joint is held at a right angle by a pasteboard splint, a bandage, and a sling, while the knee and wrist are treated with the limb in a straight line, as far as possible.
In the case of the knee, the splint is applied to the back of the leg; in sprained wrist, to the palm of the hand and same side of the forearm. Sheet wadding, which may be bought at any drygoods store, is torn into strips about two inches wide and sewed together forming a bandage ten or fifteen feet long, and this is first wound about the sprained joint. Then pieces of millboard or heavy pasteboard are soaked in water and applied while wet in long strips about three inches wide over the wadding, and the whole is covered with bandage. In the case of the knee it is better to use a strip of wood for the splint, reaching from the lower part of the calf to four inches above the knee. It should be from a quarter to half an inch thick, a little narrower than the leg, and be padded thickly with sheet wadding. It is held in place by strips of surgeon's adhesive plaster, about two inches wide, passed around the whole circumference of the limb above and below the knee joint, and covered with bandage.
In ordinary sprains of the ankle, uncomplicated by broken bone or ligament, it is possible for the patient, after resting in bed for a day, to go about on crutches, without bearing any weight on the foot until the third day after the accident. The treatment in the meanwhile consists in immersing the sprained ankle alternately, first in hot water for five minutes and then in cold water for five minutes, followed by rubbing of the parts about the injured joint with chloroform liniment for fifteen minutes, but not at the beginning touching the joint itself. The rubbing should be done by an assistant very gently the first day, with gradual increase in vigor as the days pass, not only kneading the ankle but moving the joint.