Prosthetic limb

“ These points must all be considered, but as a general rule, I would say that such attempts at preservation of the limb are much more justifiable, and longer justifiable in the hip and knee-joints than in the elbow or shoulder; for the results in the lower limb will probably be as good, if the patient survive, if not better, than those obtained by excision, while the danger of the operation is greater ”

“ 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. ”

“ Amputation of the limb is reserved for grave cases, in which life is endangered by toxaemia, which is attributed to the primary lesion. It may be called for later if the limb is likely to be useless, as, for example, when the whole shaft of the bone is dead without the formation of a new case, when the epiphyses are separated and displaced, and the joints are disorganised.
Flat bones, such as the skull or ilium, must be trephined and the pus cleared out from both aspects of the bone. In the vertebrae, operative interference is usually restricted to opening and draining the associated abscess. ”

“ In our experience the best approximation of the fragments, as shown by the X-rays, is obtained when the limb is fixed in the position of full flexion with supination. American surgeons favour the position of flexion at a right angle. In the region of the elbow there is a risk of promoting too much callus formation by early and vigorous massage, with the result that the movements of the joint are restricted by locking of the bony projections. This is probably due to bone cells being forced into the surrounding tissues, where they multiply and form new bone on an exaggerated scale. ”

“ Tenderness is elicited on making pressure over the joint, on pressing together the iliac bones, or on attempting to abduct the limb while the pelvis is fixed. The muscles of the buttock and thigh are wasted. As any attempt to bear weight on the affected limb causes pain, the patient walks with a limp, and to save the joint he assumes an attitude which is characteristic: he throws his weight on the sound limb, leans forward, using a stick for support, tilts the affected side of the pelvis downwards, and flexes the hip and knee-joints of the diseased limb. ”

“ After a time, flexion can be made to a right angle; and the limb becomes tolerably useful. By unsuccessful attempts to restore the natural position, inflammation is excited; and thus the salutary processes, commenced by nature for reparation of the displacement, are interrupted and delayed; in young persons such disease of the joint may be produced as might lead to loss of the extremity.
Luxation of the Radius alone, backwards on the outer condyle, is sometimes met with; but this bone is seldom singly displaced far from its original site. ”

“ The amputation of a leg, therefore, requires on the part of the artificial leg a double degree of responsibility; the limb must not only fit the remaining mutilated part of the leg comfortably, but must reproduce the general motion to a greater or lesser degree of perfection. These are delicate features of artificial limb production, and in no way are they more perfectly reproduced than in the Walkeasy leg.
The improvements represented by the Walkeasy leg are not simply theoretical. ”

“ Most frequently there is eversion of the toes, and to a considerable extent; sometimes there is inversion, and this is owing to the limb either having been placed in that position in falling, or having acquired it after the injury has been inflicted. The rotators outward are the more powerful; the limb naturally inclines outwards, and when in the recumbent posture, the weight of the foot favours eversion. But in fracture the muscles do not act as in a sound limb; and when the limb is once placed, the patient will not by his own efforts alter the position. ”

“ A severe pain always accompanies the motions of abduction, when they are communicated to the limb. If, while the hand is applied to the great trochanter, the limb be made to rotate on its axis, this bony protuberance is perceived to turn on itself as on a pivot, instead of describing, as it does in its natural state, the arch of a circle, of which the neck of the os femoris is the radius. This sign, which was first observed by Desault, is very perceptible, when the fracture is at the root of the neck, less, when it is in the middle, and very little, when it exists towards the head of the bone ”

“ The seat of fracture should be exposed by one or more incisions so placed as to enable the muscles to be separated and to give access to the callus. When the limb is straight, it is only necessary to gouge away the exuberant callus that interferes with rotatory movements; but when there is an angular deformity the bones must, in addition, be divided and re-set, and, if necessary, mechanically fixed in good position. In comparatively recent cases it is sometimes possible, without operation, to re-fracture the bones and to set them anew. ”

“ Treatment, in addition to that of the nerve lesion underlying the arthropathy, consists in supporting and protecting the joint by means of bandages, splints, and other apparatus. In the lower extremity, the use of crutches is helpful in taking the strain off the affected limb. When there is much distension of the joint, considerable relief follows upon withdrawal of fluid. The best possible result being rigid ankylosis in a good position, it may be advisable to bring this about artificially by arthrodesis or resection. ”

“ The limb usually becomes flexed and adducted, and a swelling forms in front of the joint at the upper part of Scarpa's triangle; the upper femoral epiphysis may be separated and furnish a sequestrum.
The flexion and adduction of the limb favour the occurrence of dislocation. A child who has recovered with dislocation on to the dorsum ilii is usually able to walk and run about, but with a limp or waddle which becomes more pronounced as he grows up. ”

“ Many surgeons are still content to follow the old plan of fixing the limb on a back-splint, or in plaster of Paris splints, and awaiting the result. It is beyond question that a large percentage of these cases recover with a perfectly useful limb—especially if the fibrous bond of union between the pieces of the broken knee-cap is adequately protected against being stretched by bending the leg at too early a date. But in some cases the fragments have been eventually found wide apart, the patient being left with an enfeebled limb. ”

“ If the limb should be swollen or inflamed to any distance, with some constitutional symptoms, in a doubtful habit of body, the termination will in general be unfavorable, whichever course be adopted, more particularly if the amputation must be done above the knee. The consideration of the circumstances in which the patient is placed, his age, and habit of body, should have great weight in forming a decision in the first instance, as to the propriety of attempting to save the limb, which ought only to be done in persons of good constitution and apparent strength. ”

“ In attempting to save the limb of a young subject, it is justifiable to run risks which would not be permissible in the case of an older person. To save an upper limb, also, risks may be run which would not be justifiable in the case of a lower limb, because, while a serviceable artificial leg can readily be procured, any portion of the natural hand or arm is infinitely more useful than the best substitute which the instrument-maker can contrive. ”

“ When there is no prospect of recovery with a movable joint it is a waste of time and a possible source of danger to persevere with conservative measures. Operation permits of the disease being eradicated and the restoration of a useful limb within a reasonable time, averaging from three to six months.
In adults, the operation consists in excising the joint; in children the aim is to remove the diseased tissues without damaging the epiphysial cartilages. ”

“ In dislocation outwards or inwards, the muscles are to be relaxed by raising the heel, extending the limb, flexing the thigh, and then forcing the bone to its proper site by manipulation. In the dislocation upwards with rupture, the limb is to be kept extended and raised, and the bone is brought as nearly into its place as possible by bandaging. When a peculiar laxity of the apparatus about the joint exists, whether as a cause of luxation or not, the support of a well-made knee-cap is required. ”

“ In all amputations of the upper extremity, it is of importance, and indeed a rule scarcely to be departed from, to leave as much of the limb as possible; for here the longer the stump, the more useful is it to the patient. In accordance with this maxim, amputation at the elbow-joint may be required, when either disease or injury extends too high for amputation in the forearm, but not too high for the formation of an anterior flap over the joint. The limb is steadied in the supine position, compression being made near the middle of the humeral artery ”

“ During the operation, the limb is supported by an assistant, either sitting or kneeling before the patient; but the regulating of the position of the limb, during sawing, is not to be intrusted to him alone. He may, from anxiety to facilitate the action of the saw, snap the bone and splinter it when it has been little more than half divided; or, from dread of this, he may lock the instrument, and so delay completion of the operation. The management of the lower part of the limb should always be by the person using the saw. ”

“ It is therefore undesirable—although usual—to attach the steels on the arm and forearm to the inner and outer sides of the limb. If this is done, as rotation is impossible, flexion of the forearm at the elbow can only be carried out in the sagittal plane. But this movement is only exceptionally required; the elbow being flexed to the right angle and fixed in this position by a ratchet the limb forms a hook upon which an object may be hung, provided that the forearm lies transversely in contact with the abdomen and not antero-posteriorly. ”

“ Even anchylosis, in most cases, can be brought about only after the lapse of a long period. In the more severe affections of this joint, amputation of the limb is the operation which must ultimately be had recourse to, if the patient survive; and it is better to perform this at once, than after the experiment of excision has been tried and found wanting. I know that parents have too often had to regret and mourn bitterly their having departed from sound advice, and lent themselves to such experimental trials on their offspring. ”

“ Surgery is never stationary, and surgeons of the present day must continue to show that it is as much a science as an art.
87. Wounds of the knee-joint from musket-balls, with fracture of the bones composing it, require immediate amputation; for although a limb may be sometimes saved, it cannot be called a recovery, or a successful result, where the limb is useless, and is a constant source of irritation and distress after several mouths of acute suffering have been endured, to obtain even this partial relief from impending death. For one limb thus saved, ten lives will be lost ”

“ In young children in whom the structures are soft and yielding, gradual correction of the deformity is to be preferred to the more rapid methods employed in older children. The proper sequence consists in correcting the deformity, providing the simplest apparatus to keep the limb in good position, preventing erroneous deflection of body weight during walking, and then allowing the child to grow and develop until he has reached the age of five before considering such an operation as transplanting tendons, and the age of ten before deciding to ankylose a flail-like joint. ”

“ The deformity disappears on forcible traction, but at once reappears when the traction is removed. A wristlet of poroplastic or leather extending from the mid-forearm to the knuckles is moulded to the limb in the corrected position, and is taken off at intervals for massage and exercises.
When operative treatment is called for, it takes the form of osteotomy of the radius and ulna about an inch or more above their articular surfaces.
Congenital dislocation of the wrist is rare. ”

“ On examining the removed stump, all the nerves, particularly the musculo-spiral, were found greatly enlarged in their extremities, and intimately adherent to the cicatrix and the ligamentous covering of the rounded extremity of the humerus. More desperate operations have even been performed to free patients from irritable stump. The lower limb has been hacked off bit by bit, even to the coxo-femoral articulation, without much, if any, relief. Such operations are hardly warrantable.
Amputation at the shoulder-joint is more frequently required for accident than for disease. ”