Professor Spence in 19 cases had 6 deaths, or a mortality of 31.6 per cent.

Culbertson's collection gives out of 426 cases, 192 deaths, or 45 per cent.

Mr. Croft, whose skill and success as an operator are well known, has recorded 45 cases of excision of hip in his own practice; of these 16 died, 11 were under treatment, 18 had recovered, of which 16 had moveable joints and useful limb; the other two are "potentially cured."[63]

Various other incisions have been devised for gaining access to the joint. The most noticeable are those in which a flap is made instead of a linear incision. Sedillot makes a semilunar or ovoid flap, the base of which is just below the great trochanter, and which includes it, the convexity being upwards and the flap being turned down. Gross's modification of this is preferable, being turned the opposite way, the convexity being downwards (Plate III.

fig. E.), and the flap thus being turned up.

_Results in successful cases._--Of fifty-two in Hodge's table, thirty-one had useful limbs, six indifferent, three decidedly useless, four died within three years, and of the remaining eight no details are given.

The shortening is always considerable, a high-heeled shoe being required in most cases; a stick is indispensable; in many, crutches are necessary.

Various operations have been devised for the treatment of osseous anchylosis of the hip-joint when in a bad position. All are more or less dangerous. Perhaps one of the least dangerous is the plan of subcutaneous division of the neck of the femur by a narrow saw, proposed by Mr. Adams of London. It is sometimes a very laborious operation.

EXCISION OF KNEE-JOINT.--_Removal of Bone._--In every case the excision of the joint ought to be complete. Some attempts have been made to save one or other of the articular surfaces, but they have proved failures.

The patella has frequently been left when it was not diseased, as is often the case, but the results have not been such as to recommend such a practice.

_Direction of Section of the Bones._--The bones should be cut transversely, and, as far as possible, be in accurate and complete apposition. A slight bevelling at the expense of the posterior margin will produce an anchylosis of the limb in a very slightly flexed position, which is found to aid the patient in walking.

It has been proposed by some[64] to cut both bones obliquely, so as to obviate the difficulty of making the transverse surfaces parallel. This involves a still greater practical difficulty in keeping these oblique surfaces in position during the after-treatment.

This plan might possibly be valuable in cases where the disease was limited to one or other edge of the bone.

Among the various incisions recommended, the best seems to be the _Semilunar Incision_.

_Operation._--The limb being held in an extended position, a single semilunar incision (Plate I. fig. B.) is made, entering the joint at once, and dividing the ligamentum patellae. It should extend from the inner side of the inner condyle of the femur to a corresponding point over the outer one, pa.s.sing in front of the joint midway between the lower edge of the patella and tuberosity of the tibia. The flap is then dissected back, the ligaments divided, when by extreme flexion of the limb the articular surface of the tibia and femur are thoroughly exposed. The crucial ligaments must then be divided cautiously, and the articular portion of the femur cleaned anteriorly by the knife, posteriorly by the operator's finger, so far as possible to avoid injury of the artery. The whole articular surface of the femur must then be removed by a transverse cut with the saw as exactly as possible at a right angle with the axis of the bone. The amount of the femur which will require removal will in the adult vary from an inch to an inch and a half or even more. It _must_ involve all the bone normally covered by cartilage; and this being removed, if the section shows evidence of disease, slice after slice may require removal till a healthy surface is obtained. Occasionally, if the diseased portion appears limited, though deep, the application of a gouge may succeed in removing disease without involving too great shortening of the limb. Specially in children, it is of great importance to avoid removing the whole epiphysis. The tibia must then be exposed in a similar manner, and a thin slice removed; if the bone be tolerably healthy, even less than half an inch will prove quite sufficient.

This method has an immense advantage in that it provides an excellent anterior flap for the amputation, which may be required in cases where the disease of bone is found too extensive to admit of the excision being practised.

This method, with slight deviations, is substantially that of Richard Mackenzie of Edinburgh, Wood of New York, Jones of Jersey.

Haemorrhage must then be stopped, and that as thoroughly as possible, by torsion, cold, and pressure, and the flap brought accurately together with sutures.

In some rare cases, it may be found necessary to divide the hamstring tendons to rectify spastic contraction of the muscles; but this can generally be done quite well from the original wound.

Holt makes a dependent opening in the popliteal s.p.a.ce for drainage. This is unnecessary if the incisions are made sufficiently far back, and if the wound is properly drained. It is unsafe, as approaching so close to the artery and veins. If much bagging takes place, the use of a drainage-tube will prove quite sufficient.

_After-treatment._--Wire splints lined with leather and provided with a foot-piece; special box-splints with moveable sides, as Butcher's;[65]

plaster-of-Paris moulds are used by Dr. P.H. Watson[66] of Edinburgh and others; this last form of dressing is the best, and allows the limb to be suspended from a Salter's swing.

H-_shaped incision._--The internal incision should commence at a point about two inches below the articular surface of the tibia, and in a line with its inner edge; it should then be carried up along the femur in a direction parallel to the axis of the extended limb, so as to pa.s.s in front of the saphena vein, and thus avoid it, for a distance of five inches. The external incision, commencing just below the head of the fibula, must be carried upwards parallel to the preceding for the same distance. Both incisions must be made by a heavy scalpel with a firm hand, so as to divide all the tissues down to the bone. The vertical incisions are then united by a transverse one pa.s.sing across just below the lower angle of the patella. The flaps thus formed must then be dissected up and down, and the internal and external lateral ligaments divided, thus thoroughly opening the joint and exposing the crucial ligaments. These must be divided carefully, remembering the position of the artery. The bones are then to be cleared and divided, as in the operation already described. This is the method of Moreau and Butcher.[67]

_Patella and Ligamentum Patellae retained._--"A longitudinal incision, full four inches in extent, was made on each side of the knee-joint, midway between the vasti and flexors of the leg; these two cuts were down to the bones, they were connected by a transverse one just over the prominence of the tubercle of the tibia, _care being taken to avoid cutting by this incision the ligamentum patellae_; the flap thus defined was reflected upwards, the patella and the ligament were then freed and drawn over the internal condyle, and kept there by means of a broad, flat, and turned-up spatula; the joint was thus exposed, and after the synovial capsule had been cut through as far as could be seen, the leg was forcibly flexed, the crucial ligaments, almost breaking in the act, only required a slight touch of the knife to divide them completely. The articular surfaces of the bones were now completely brought to view, and the diseased portions removed by means of suitable saws, the soft parts being hold aside by a.s.sistants."[68]

Results of Excision of Knee-joint:--Holmes's Table of recent cases from 1873-1878--

245 cases; 25 deaths, and 47 failures.

Spence's--33 cases; 22 recovered, 11 died.

BUCK'S OPERATION FOR ANCHYLOSED KNEE-JOINT.--The principle of this operation is to remove a triangular portion of bone, which is to include the surfaces of the femur and tibia, which have anchylosed in an awkward position, and by this means to set the bones free, and enable the limb to be straightened. Access to the joint may be obtained by either of the two methods already described. Sections of the bones are then to be made with the saw, so as to meet posteriorly a little in front of the posterior surface of the anchylosed joint, and thus remove a triangular portion of bone; the portion still remaining, and which still keeps up the deformity, is then to be broken through as best you can, either by a chisel, or a saw, or forced flexion. The ends are to be pared off by bone-pliers, and the surfaces brought into as close apposition as possible. The operation is a difficult one, a gap being generally left between the anterior edges of the bones, from the unyielding nature of the integuments behind, and the difficulty of removing the posterior projecting edges from their close proximity to the artery. Of twenty cases on record, eight died, and two required amputation.

_Relation of Age to result in Excision of Knee-Joint from Hodge's Tables._

Of 182 complete cases:--

68 below 16 years: 50 recovered--18 died; or 26 per cent. died.

114 above 16 years: 55 recovered--59 died; or 51.7 per cent. died.

EXCISION OF THE ANKLE-JOINT.--_In what cases is it to be done, and how much bone is to be removed?_

In cases of compound dislocation of the ankle-joint, the tibia and fibula are apt to be protruded either in front or behind. When this happens it is a dislocation generally very difficult to reduce, and when reduced to retain in position. In such cases, if there seems to be any chance of retaining the foot, excision of the articular ends of tibia and fibula greatly add to the probabilities in its favour. It may be done without any new wound, and, in general, by an ordinary surgeon's saw.

When the astragalus does not protrude, it seems to matter little for the future result whether its articular surface be removed or not. When, on the other hand, it protrudes, as a result either of the displacement of the entire foot, or of a dislocation complete or partial of the astragalus itself, there is no doubt that excision either of its articular surface or of the entire bone will give very excellent results. Jager reports twenty-seven such cases, with only one fatal, and one doubtful result.

_In cases of disease of the Ankle-joint._--Excision has been performed a good many times, and should in most cases be complete. A work like this is not the place to discuss the propriety of operations so much as the method of performing them, but one remark may be permitted. Few points of surgical diagnosis are more difficult than it is to tell whether in any given case disease is confined to the ankle-joint, and whether or not the bones of the tarsus partic.i.p.ate. If they do even to a slight extent, no operation which attacks the ankle-joint only has any reasonable chance of success. It may look well for a time, but sinuses remain, the irritation of the operation only hastens the progress of the disease of the bone, and the result will almost certainly be disappointing, amputation being almost the inevitable _dernier ressort_.

_Methods of Operating_:--

_Mr. Hanc.o.c.k_ has been very successful by the following method:--

Commence the incision (Plate II. figs. B.B.) about two inches above and behind the external malleolus, and carry it across the instep to about two inches above and behind the internal malleolus. Take care that this incision merely divides the skin, and does not penetrate beyond the fascia. Reflect the flap so made, and next cut down upon the external malleolus, carrying your knife close to the edge of the bone, both behind and below the process, dislodge the peronei tendons, and divide the external lateral ligaments of the joint. Having done this, with the bone-nippers cut through the fibula, about an inch above the malleolus, remove this piece of bone, dividing the inferior tibio-fibular ligament, and then turn the leg and foot on the outside. Now carefully dissect the tendons of the tibialis posticus and flexor communis digitorum from behind the internal malleolus. Carry your knife close round the edge of this process, and detach the internal lateral ligament, then grasping the heel with one hand, and the front of the foot with the other, forcibly turn the sole of the foot downwards, by which the lower end of the tibia is dislocated and protruded through the wound. This done, remove the diseased end of the tibia with the common amputating saw, and afterwards with a small metacarpal saw placed upon the back of the upper articulating process of the astragalus, between that process and the tendo Achillis, remove the former by cutting from behind forwards. Replace the parts _in situ_; close the wound carefully on the inner side and front of the ankle; but leave the outside open, that there may be a free exit for discharge, apply water-dressing, place the limb on its outer side on a splint, and the operation is completed.

Skin, external, and internal ligaments, and the bones are the only parts divided, no tendons and no arteries of any size.[69]

_Barwell's_ method by _lateral incisions_ is briefly as follows:--

On the outer side, an incision over the lower three inches of the fibula turns forward at the malleolus at an angle, and ends about half an inch above the base of the outer metatarsal. The flap is to be reflected, fibula divided about two inches from its lower end by the forceps, and dissected out, leaving peronei tendons uncut. A similar incision on the inner side terminates over the projection of the internal cuneiform bone; the sheaths of the tendons under inner angle are then to be divided, and the artery and nerve avoided; the internal lateral ligament is then to be divided, the foot twisted outwards, so as to protrude the astragalus and tibia at the inner wound. The lower end of the tibia and top of the astragalus are to be sawn off by a narrow-bladed saw pa.s.sing from one wound to the other.[70]

Dr. M. Buchanan of Glasgow has described an operation by which the joint can be excised through a single incision over the external malleolus.

_Results._--So far as can be gathered from cases already published, the results are very often (at least in one out of every two cases) unsatisfactory. Sinuses remain, which do not heal, the limbs are useless, and amputation is in the end necessary.

Langenbeck has performed it sixteen times during the last Schleswig-Holstein war (in 1864), and the Bohemian war in 1866, with only three deaths. In these cases the operation was subperiosteal.

EXCISION OF THE SCAPULA.--More or less of the scapula has in many cases been removed along with the arm, and even with the addition of portion of the clavicle.

Excision of the entire bone, leaving the arm, has been performed in two instances by Mr. Syme. The procedure must vary according to the nature and shape of the tumour on account of which the operation is performed.

Mr. Syme operated as follows:--

In the first case, one of cerebriform tumour of the bone, he "made an incision from the acromion process transversely to the posterior edge of the scapula, and another from the centre of this one directly downwards to the lower margin of the tumour. The flaps thus formed being reflected without much haemorrhage, I separated the scapular attachment of the deltoid, and divided the connections of the acromial extremity of the clavicle. Then, wishing to command the subscapular artery, I divided it, with the effect of giving issue to a fearful gush of blood, but fortunately caught the vessel and tied it without any delay. I next cut into the joint and round the glenoid cavity, hooked my finger under the coracoid process, so as to facilitate the division of its muscular and ligamentous attachments, and then pulling back the bone with all the force of my left hand, separated its remaining attachments with rapid sweeps of the knife." (Plate III. fig. G.)

Mr. Syme's second case was also one of tumour of the scapula; the head of the humerus had been excised two years before.

He removed it by two incisions, one from the clavicle a little to the sternal side of the coracoid, directed downwards to the lower boundary of the tumour, another transversely from the shoulder to the posterior edge of the scapula. The clavicle was divided at the spot where it was exposed, and the outer portion removed along with the scapula.[71]