Elements of Surgery

by Robert Liston

Union of divided bones, as of soft parts, is preceded by incited circulation in the part, and effusion of organisable matter. The extent of action is regulated by that of the injury, whether inflicted by accident or by operation. If the soft parts have not been much bruised, if the bone and its covering are merely separated and slightly displaced, and then speedily put in contact, the incited action and the effusion are limited to the divided parts. There is no irregularity afterwards at the point of fracture, the new matter that is not required being absorbed soon after deposition; the bone is smooth and even as before. The deposit of new matter under the periosteum and into the medullary canal is here well exhibited. By this means only is the bone kept together for a very considerable period; afterwards the broken ends are united, and the temporary callus absorbed. If, on the contrary, there is much displacement, and if that is not entirely removed, intense action ensues both in the soft and hard parts, there is great effusion of new matter, or callus, soft and yielding at first, but gradually becoming hard and dense—bony particles being deposited from the vessels ramifying in the extremities, or in the attached fragments, of the old bone. When detached portions of callus are found lying in the soft parts, a piece of old bone which retained its vitality has generally formed the matrix of the deposit. When the ends of bones have been badly placed, and meet each other at an angle or curve, occasionally osseous deposit seems to form in the concavity. This increases in size, unites with the portions of the shaft, and forms a sort of bridge uniting them. This by M. Gulliver has been termed accidental callus.

In badly reduced fracture the swelling is great and hard. The callus is exuberant, much being required for the union of the fractured ends that overlap, and are perhaps far from being in contact; the vascular action and accompanying effusion are great, according to the necessity for them. The bone at the united part is enlarged to perhaps double its original thickness, or even to a greater size. After some time, the ends of the old bone, and part of the new deposit, are rounded off by absorption of the protuberances, and the part becomes more shapely. The canal of the bone and the cancellated texture is again restored. The accompanying sketch of a section of the humerus shows a double fracture. The superior one near the neck, where there is still some thickening, had been well adapted, and the canal is quite perfect. In the other and more recent there is considerable overlapping. The portion of outer osseous shell projecting into the medullary canal would in the end have been removed by the absorbents, and the deformity much diminished.

When the ends of the bone are not well placed, or when they are moved occasionally whilst the uniting medium is still soft, there is danger of a false joint being formed—the callus either giving way, or being all along imperfect, and the extremities at the soft part becoming smooth and moveable on each other; or incited action may run high and terminate in suppuration, with death or ulceration of portions of the bone.

Fragments are sometimes entirely detached at the time of the accident, and perish at once; or are so slightly connected with the shaft that they lose their vitality on the first accession of inflammation, become surrounded by purulent matter, part from their slight attachments, and come towards the surface. Or the shaft itself may be so bruised by the violence of the injury as to be incapable of resisting incited action, though slight. By malpractice, such untoward consequences as the preceding, and many others beside, are frequently induced.

The uniting medium of separated bones remains soft for some time, as was already observed; and often, whether from the state of the constitution, or the circumstances connected with the fracture, the parts remain long moveable. Pregnancy is said to prevent union; but I have often seen fractures in pregnant women unite as speedily and firmly as if the patients had been in that state, and otherwise in robust health; profuse uterine or vaginal discharges, or determination to particular parts or organs, will certainly retard union.

In ordinary cases, the limb, if not lying altogether straight, can be moulded into a proper form after the lapse of eight or ten days from the time of injury, without the patient suffering any great degree of pain, without the process of union being at all interrupted, or the cure protracted; even at the late period of five or six weeks, badly united fractures may sometimes be much improved by gradual pressure and change of position. A gentleman fell from his horse, and sustained simple fracture of both bones of the leg, near the middle. It had been laid and retained on its side. I saw him exactly six weeks after the injury; the leg was much curved forwards, and the foot turned outwards. The limb was placed on the heel, and a long splint, with a foot-piece, applied on the outside; by attention to its position, and by gradually tightening of the bandages, it soon became quite handsome. Care should be taken not to allow the patient to rest too soon on the fractured limb; for though quite straight, symmetrical, and of the proper length, when the retentive apparatus is discontinued, it may become short and deformed in a few days from even slight weight being put upon it.

The period at which firm union takes place varies; the process is more rapid in young people than in those advanced in life, and will depend more on the extent of the injury, and its vicinity to the centre of the circulation than on the size of the broken bone. The requisite length of confinement is regulated by these circumstances, and by the use to which the part is to be afterwards put; the lower limbs require longer time for consolidation than the upper.

In the treatment of fracture, as in solution of continuity in the soft parts, great advantage is gained by placing the disjoined parts as nearly in their original position as possible, retaining them so, and allowing of no motion. These indications ought to be accomplished very soon after the accident; many evils are thus prevented—the further laceration of the soft parts, the inflammatory effusion into all the tissues, and the consequent startings and spasms of the muscles. This cannot be too much insisted on. There is much folly and absurdity in allowing a broken limb to lie unrestrained—leaving the ends of the bones displaced, the one riding over the other—whilst attempts are being made to keep down the inflammation, by applying leeches, cold lotions, or large poultices—all perfectly ineffectual so long as the palpable cause of incited action remains unheeded. The circumstances which kindle and keep up inflammation should always be understood; they are easily discovered in fracture, and when understood should never be lost sight of. If the parts be replaced there will seldom be inflammation; if they remain displaced, the inflammation is so great that it is impossible to subdue it by any means short of removal of the cause. There is also an impossibility,—not to mention the patient’s sufferings,—of reducing bones to a good position some weeks after the accident. Such practice has been extensively followed and recommended by some, even modern writers; they set about reducing a fracture at a period after the accident, at which, by proper treatment, union would have been completed, or at least far advanced. The confinement and suffering of the patient are increased threefold, and after all the cure is bad, and there is a risk of false joint.

In all fractures, whether simple or compound, comminuted or complicated, if an attempt is to be made to save the limb, let reduction be immediate; coaptation and retention of the separated parts cannot be made too soon. A neglected case may be met with, in which the intensity of inflammatory action in all the tissues may forbid immediate interference. But even though inflammatory action has taken place to some extent, there are no surer means of arresting it than removal of its cause—the irregular ends of the bones being taken away from among the soft parts—provided it can be done without violence or increase of tension. Reduction is facilitated by proper position of the limb, by relaxation of certain sets of muscles. Extension and counter-extension are made, and but very little force is required; the surgeon extends the limb with one hand, and resists with the other; when the system is excited, and the muscles act spasmodically, an assistant may be required to steady the limb, and to resist the extending power which the surgeon employs. Then the position of the limb and of the patient, when long confinement is required, must be considered, and rendered as easy as possible, though at the same time secure. The apparatus for retaining the bones in the right position must be varied according to circumstances.

In compound fractures, when the wound is so small and clean that adhesion readily takes place, the cure is as rapid as in the simplest form of accident; but when the soft parts are much lacerated, the breach in them must be repaired by granulation; there will be profuse discharge from the wound, with risk of deep suppuration, and union of the bone will be slow. To accomplish reduction, long and sharp pieces of bone may require to be removed by means either of the saw or of the forceps, or else the wound must be dilated; both proceedings may be necessary in some cases. Detached portions of bone, and foreign bodies, if any, must be taken away; and the edge of the wound may be approximated when a reasonable chance of adhesion exists. The limb must then be properly placed and secured. Inflammatory action, should it threaten, must be kept down, but bleeding and purging are to be employed with caution. The action and its consequences are moderated by one or two depletions, but these must not be had recourse to without due consideration of circumstances; strength is required to effect the action necessary for union, and to withstand the subsequent suppurations, though these may be prevented or at least moderated by timely depletion. Abscesses are to be opened early, the parts are fomented, and then perhaps poulticed. The limb must all along be kept in a correct position, dead portions of bone must be removed when detached, and the strength supported by generous diet and wine. Opiates are of great use in alleviating the pains and twitchings in the limb. Poulticing is to be continued only for a short time; in many cases it may be altogether superseded by fomentations; and the latter should be used only when abscess is threatened, or when the patient is much pained at one or more parts of the limb. Support and gentle pressure are indispensable soon after evacuation of the matter, when no fresh collection is threatened.