Compliments of the Author. THE MODERN TREATMENT OF FRACTURE OF THE PATELLA. BY JOHN S. MILLER, M.D., SURGEON TO ST. JOSEPH'S HOSPITAL, PHILADELPHIA. REPRINTED FROM THE TRANSACTIONS OF THE PHILADELPHIA COUNTY MEDICAL SOCIETY, 1893. THE MODERN TREATMENT OF FRACTURE OF THE PATELLA. By JOHN S. MILLER, M.D., SURGEON TO ST. JOSEPH'S HOSPITAL, PHILADELPHIA. [Read February 22, 1893.] The uncertainty in the results of treatment of fracture of tiie patella, and the values that are placed by operators upon the various methods applied for the fulfilment of the indications in the treat- ment of this injury, as well as a desire to learn what the members of this Society have experienced in their practice, has induced me to submit this subject for discussion. It is not my desire to speak at length of the various older methods of treatment, but I shall more fully emphasize those operations which have been brought before the profession in later years. The treatment of simple fracture of the patella may be divided into the operative and the non-operative. The one involves no mortality, whereas the other may be attended by great risk to life and limb if antisepsis is not carried out in its fullest sense. It is an undisputed surgical principle that when osseous union is obtained in a fracture, this result is certainly more desirable than ligamentous union. It has been claimed, and notably by Konig, Levis, and Dennis, that bony union may take place in simple frac- ture of the patella treated by the older methods, such specimens having been found in anatomical rooms. Such results can only be possible where the separation of the fragments is very slight, and where there is no injury to the liga- ments and aponeurotic tissues adjacent. At best, the chances are greatly in favor of ligamentous union in a greater or lesser degree. Experience has taught us that ligamentous union, however short, does not always restore the function of the limb to its former use- fulness. 2 MILLER, The most obvious causes which prevent union of the fragments are: 1. Inability to maintain steady and accurate apposition of the fragments due to imperfect apparatus. 2. Extreme separation of the fragments by the powerful retraction of the quadriceps extensor muscles dragging upon the upper frag- ment. 3. - Interposition of aponeurotic and bursal structures between the fragments. While consideration must be given to the action of the quadriceps muscle as well as to the occurrence of blood-clot in the joint, the true cause probably is the intervention of the lacerated patellar tissue (Macewen). Malgaigne?s hooks, or the same as modified by Levis, are very efficient for approximating the fragments and retaining them in an accurate position. They are useful in such cases where there is no interposition of soft tissue. Malgaigne's hooks have fallen some- what into disuse, as I have learned from instrument-makers and surgeons in this country aud abroad. It is quite likely that the com- plications which followed their application were largely due to the introduction of septic matter. In the days when this method was more popular, antiseptic surgery was unknown or perhaps in its infancy. Agnew regarded the use of this instrument as " infernal and bar- barous." Roberts still advocates the use of Levis's modification of Malgaigne's hooks. I believe that in suitable cases, and under strict asepsis, they fulfil the indication, and are worthy of being restored to the surgical armamentarium of to-day. Treatment by the metallic suture. According to Dennis this oper- ation was first performed in this country by Rhea Barton in 1834, and in 1838 by McClellan. To avoid inflammatory action the operation should not be performed under forty-eight hours after the accident. The limb is to be placed at rest, and cold affusions are to be applied. The transverse incision is preferable, the clots should be carefully washed away, and any fringes of aponeurotic or lacer- ated tissues should lie removed with scissors. The ends of the fragments should be curetted to remove any of the soft tissues which may have become impaled or crowded into the fractured surfaces. The fragments are accurately brought together, and usually four drill-holes are made for the two heavy silver wires which are to lie inserted. The ends of the wires may be cut off and hammered down, TREATMENT OF FRACTURE OF THE PATELLA. 3 or they may be allowed to protrude from the wound. Ordinarily there is no difficulty in removing them, as they cut their way out and are found lying loose in the dressing. The aponeurosis is next united with eatgut, short drainage-tubes are introduced at the most dependent part of the wound, and the skin wound is closed, prefer- ably with silkworm-gut. The limb may be treated in a fracture-box, in which case the wound is under constant observation. Or a plaster-of-Paris dress- ing may be applied after the soiled dressing and the drainage-tubes are removed, which is on the third day. The mortality, according to the statistics collected by Dennis, is four out of one hundred and thirty-seven cases. These statistics are based upon cases occurring during the infancy of the wiring method. He believes that it will be less than 3 per cent, in the future. This question largely depends upon the strictness with which surgeons carry out antiseptic precautions. I have had no experience with Schede's method, which has been denounced by Kbnig (incision and washing out of clots). Cecci's as well as Barker's operations are among the more recent procedures, but they have not been performed often enough to form a basis upon which to estimate their practical value. The following cases serve to illustrate three of the methods in general use at this time : Case I.-C. M., aged thirty-one years, milkman. On going down stairs June 27, 1885, patient missed the bottom step and fell on his buttocks in a squatting posture. The left leg was forced into extreme flexion, and simulta- neously it struck the wall. He thinks that the fracture occurred during the flexion of the leg upon the thigh. The blow against the wall caused a lacer- ation of the soft parts communicating with the joint. Separation of the fragments was very marked, and the subsequent effusion with the blood-clots escaped through the wound. The joint was not irrigated, but the parts were cleansed, and an antiseptic dressing was applied. The limb was placed on an Agnew splint, and a figure-of-8 bandage applied. The wound closed without any complication. In six weeks he was allowed to go about with a cane. Ankylosis was overcome by passive motion and massage. Result, eight years later: The union is osseous. Use of limb perfect. Case II.-Mrs. S. E. M., forty-four years old, seamstress. On June 13, 1888, while stepping off backward from a chair with the right foot first, she felt something break in the knee of the same leg. She fell to the floor in great pain, and it was found that she had sustained a transverse fracture of the patella. The effusion and swelling were at once so great that it was im- possible to elicit crepitus. Separation of fragments about two inches. Ice- cold applications were made for sixty hours, when I suggested opening the 4 MILLER, joint and suturing the fragments. This suggestion was not accepted. I then decided to use Levis's modified Malgaigne hooks. The limb was cleansed and sterilized, and hypodermatic injections of cocaine so benumbed the parts that the hooks were applied without inflicting pain Great difficulty was expe- rienced in maintaining the apparatus in position, and it had to be handled frequently, thereby causing pain and irritation. The slipping was due to a peculiar pointed condition of the upper fragment, and also to the tilting of the fragments from the pressure of the serum and blood clots in the joint. To maintain antisepsis, bichloride of mercury irrigation and gauze of 1 to 1000 was applied. The corrosive action of the solution upon the screws was so rapid that they became immovable. The joint was highly inflamed, and I feared that suppuration might ensue. About five days later I removed the hooks and placed the limb upon a Hamilton splint (inclined plane) with figure-of-8 adhesive strips. She remained in bed five weeks. Massage of the quadriceps extensor muscles was now made daily, as the circumference of the thigh rapidly diminished. Passive motion of the joint was made for two weeks longer, when she was allowed to walk about with a cane. At this time the fragments were separated about three-quarters of an inch by ligamentous union. Result, five and a half years later: Excellent use of limb. Ligamentous union about one-half inch long. Case III.-Same patient. On August 30, 1889, about fourteen months after the above accident, she fell in her yard and sustained a multiple fracture of the patella of the left leg. The preliminary treatment was the same as in the first accident. Three days after the injury I had the affected limb shaved and scrubbed from the middle of the thigh to the calf of the leg, and thor- oughly sterilized with a mercurial solution of 1 to 1000. A transverse incision was made over the middle of the knee, when a copious discharge of bloody serum took place. Large blood-clots filled the posterior portion of the joint. The three fragments were widely separated, and the floor of the patellar bursa had been pinched, and shreds thereof were impaled, as it were, by the serrated or tooth-like fractured surfaces. So firm was this impaction that it was necessary to use a sharp curette. The joint was irrigated thoroughly with a 1 to 2000 corrosive sublimate solution, and all lacerated tissues removed with scissors. Short drainage-tubes were inserted on either side of the joint. The fragments were drilled and brought together with heavy silver wires, the ends of which were left long. The aponeurosis over the patella was brought together with catgut sutures. The skin wound was united with heavy silk sutures. Iodoform gauze and a bandage completed the dressing. The limb was laid upon a long bolster, and sand-bags were placed on either side of the limb. By this procedure the wound was under constant surveillance. On the tenth day the drainage-tubes were removed and a plaster of-Paris dressing was applied, reaching from the upper third of the thigh to the ankle. No elevation of temperature occurred throughout the case. The plaster dressing was removed in six weeks. Ankylosis was quite firm, but daily passive motion soon made the knee-joint flexible. The wires were easily removed. Result, four and one-half years later: Bony union, and a useful limb, This case is of interest owing to the fracture of the opposite patella within TREATMENT OF FRACTURE OF THE PATELLA. 5 a short time. She is undecided as to which knee is the better, and can run and go up stairs without difficulty. She only experiences some inconvenience on going down stairs. Case IV.-Daniel J., aged twenty-three years. On June 6, 1889, while vaulting into the rear of a wagon, which was going at a rapid rate, he felt a stinging pain in the left knee. He was disabled at once, and noticed a de- formity. The joint soon began to swell. Was taken to a hospital, where the injury was pronounced a contusion of the knee-joint. He was then taken home in a carriage, and the attending physician accepted the diagnosis made at the hospital and treated the case accordingly. The joint became very stiff, and passive motion was frequently made. The case not improving under this treatment, another physician was called, who pronounced the case "white swelling." This physician was dismissed, and another called in, who pro- nounced it "housemaid's knee." About four months after the accident I saw the case for the first time, and discovered a transverse fracture of the lower fifth of the patella. The limb was shaved and sterilized in the usual way. A transverse incision was made. The diagnosis was now fully confirmed, the lower fragment being very small. The joint contained only a small quantity of synovial fluid. The fragments at the fractured points were covered by a dense cartilaginous tissue, but no ligamentous union had formed. This was removed with diffi- culty with a cartilage knife. A thin slice of bone was removed from each fragment with a surgical engine. The separation of the fragments was fully three inches, and it was impossible to make them meet. A subcutaneous division of the quadriceps extensor tendon was then made, which permitted the upper fragment to be drawn down. The lower fragment was so small that the gold-plated copper wire had to be inserted into the ligamentum patellae, as there was not enough bone left to hold. Two wires were placed and twisted, and the after-treatment was substantially the same as in Case III. It can be readily understood why the surgeons who had seen the case in the early stage were deceived. On palpation the patella probably seemed to be of normal size, and the lower fragment being so exceedingly small, accompanied by effusion and swelling, certainly made an accurate diagnosis very difficult. The gap in the ligament of the quadriceps extensor muscie is now entirely filled in. The knee was stiff for a long time. Under massage and passive motion the ankylosis was soon relieved. Result, three years and nine months since accident: Perfect use of limb. Absolute bony union. The failure of the Malgaigue hooks in Case II. can be easily explained. Although the limb had been thoroughly cleansed and sterilized, I erred in using a cocaine solution which was not sterile, and thereby defeated my efforts at antisepsis. In the future I shall prefer ether or chloroform anaesthesia when the patient cannot bear the pain inflicted by the application of the hooks. The corrosive effect upon the screws of the hooks might have been avoided by using iodoform-gauze dressing or baked aseptic gauze. 6 TREATMENT OF FRACTURE OF THE PATELLA. In the operation of suturing the patella, to my mind the joint should be treated precisely like the peritoneal cavity. Corrosive solutions should be avoided. We should aim at a strictly aseptic operation, and the wound and surrounding parts should be constantly irrigated throughout the operation with hot distilled water. Catgut and other animal sutures have been used and recommended for suturing the fragments, but several unpleasant experiences with this ligature in ununited fracture of other parts of the body have de- terred me from using it in fractures of the patella. Although it is hardly proper to make deductions from such a small number of cases, yet it appears that excellent results can be obtained with the ordinary postural treatment in cases of slight displacement. It is claimed by some authorities (Von Bergmann, Hamilton, and others) that a short ligamentous union is as serviceable as a bony one. This is diametrically opposed by authorities of equal prominence. In my practice I should only resort to the suturing of an old or neglected fracture, where the ligamentous union is so long as to greatly impair the usefulness of the limb, in which case it also endangers the patella of the opposite side; in compound fracture; and in cases where crepitus cannot be felt owing to the interposition of soft tissues. The suturing method is not indicated in all cases. The cases should be carefully selected and are not to be attempted by one who does not possess the utmost tact and confidence in maintaining asepsis. It seems as though the knee-joint is less tolerant of surgical manipu- lation than the peritoneal cavity, and more sensitive than the latter in that the synovial membrane has not the same power to dispose of infective germs. Even with a mortality of only 3 per cent., we are obliged to regard this procedure as one demanding serious consider- ation, as to whether the risk balances the advantages to be gained.