The operation of a flexor tendon graft is a very commonly done procedure. The reason is that injuries to the flexor tendons in this area of the palm. Between the distal crease here and the middle flexion crease of the fingers is an area that has been called no man's land. Now in this area we have to flexor tendons held in place by a thick fibrous surrounding sheath, sometimes called a pulley, and when the damage occurs to the tendons in this area, if they're injured by laceration or scarring from an operation of a repair, then flexion of the finger is impaired. Now, in order to reproduce a flexor mechanism in the finger, it's necessary to substitute for the whole tendon. In other words, a tendon from the lumber ical origin in the palm to the insertion. So we must remove all of the old tendons, the scarred area as well as the remaining parts of the tendon as well. Likewise, the synovial sheath that covers this tendon. Now the pulleys should be repaired if necessary, or reconstructed. The principle of this operation is based on the work of banel and consists of the full length tendon graft going from the lumberjack large in in the palm through the finger to insert into the bone of the terminal phalanx. Now at the same time that this graft is inserted, we reconstruct pulleys and also repair the nerves if they're damaged. The usual incision is mid lateral in the finger. In other words it's dorsal to the flexion creases of the finger and a curved incision in the palm paralleling the flexor creases here. Now in the following scenes you will see an operation of a tendon graft into a finger. Dr. Stark will do the operating procedure and while he's doing it I will try to point out the important steps in the operation. This is the hand of a patient who severed both flexor tendons in the right middle finger. You'll notice that she can flex the metacarpal financial joint for the intrinsic muscles are still functioning but she cannot flex the middle and distal joints of the fingers. Both flexor tendons have been severed in the proximal segment, passive motions are normal. The joints are completely limber. She has a palmer's longest in the forearm which we will use for the grass. Operations of this type are not done until the tissues are soft and supple and the joints are completely mobile. Here you see a full range of passive motion of the digits. Incisions in the finger are made mid lateral. Here you see the dorsal points of the flexor creases. The incision should be dorsal to this. If it is made anterior you're apt to develop a flexion contracture. All the operations are done under the ischemia of a tourniquet and the arm is first wound with a rubber bandage and then the cuff is inflated on the upper arm. The mid lateral incision is made the full length of the finger and by undermining the skin carefully at the level of the middle joint. Small retractors can be placed and the finger held firmly for the rest of the dissection. The deeper part of the incision here now goes through a layer of fashion which may be part of Cleveland's ligament or part of the transfers retina macular system. This is divided carefully and we will place sutures in this layer of tissue. Later is the incision is deepened, the flexor tendons and the sheep come into view and on the volar flap the neurovascular bundle remains here. You will see some adhesions between the subcutaneous tissues and the sheath and here carefully towards the tip of the finger. We make sure that we do not damage the digital nerve which tends to go a little more dorsal. In this area of the hand there's also a deep layer of fashion at the level of the distal joint. Similar to that at the middle joint. And this is divided but not necessarily sutured as a separate layer. Later when we expose the flexor tendons now in the finger. MS. Buller flap containing the neurovascular bundle is held out of the way and we have a complete exposure of the contents of the finger, we could even repair a digital nerve on the opposite side. We want to save these pulleys these national bands which hold the tendons in place. But we want to remove all the remaining she and scar and tendons here we're removing the tenant and its insertion dividing the vehicle. Um But being very careful to not damage the volar plate. For if any scar occurs here, the tendon will become adherent will not glide and we will have difficulty in getting a good range of motion. It's not necessary to preserve the entire pulley. This pulley in the middle segment has been narrowed, but it is necessary to save some pulley in both the middle and the proximal segments of the finger. The supplements 10ant is removed. Clear out to its insertion. We do not believe that you should leave the decolonization of the fibers or the chasm of camper as it is called. But should remove the tendon completely here, you will notice that the proximal pulley is being opened in a portion of it being removed. If the pulleys are so badly damaged and scarred that they have to be removed, then we believe that reconstruction of the pulley by free graphs should be carried out at the same time as the flexor tendon graft all of the scar tissue was divided with sharp dissection and the entire contents of this area removed all excessive sheath and scar, leaving only these pulleys here a little strand of tissue at the middle joint has been left Notice that the 10ant is now fairly free as far as the finger is concerned. But we will see later there are still some adhesions in the pond. Now the attachment is made for the tendon to the distal phalanx. Here we turn up an osteoporosis, osteo flat distal to the joint so that there's a good angle of approach of the tendon to provide flexion of this terminal segment. A drill is passed through the nail to exit in this hole in the phalanx, and this will provide us with the channel through which a wire can be passed, and later on the tendon suture itself drawn through this area, This enables us to bring the tendon right into the raw bony surface. This guide wire is a simple loop of wire to facilitate the later passage of the tendon suture itself. Here again are the three pulleys, essential mechanical feature so that the tendon will flex the finger completely. Now we're ready to expose the tendons in the palm incisions here are made paralleling the flexor creases and make them of adequate size to gain exposure and do a careful excision of scar as well as an adequate repair of the tendon and the graft in this area. We expect to make our tendon suture at this level as far proximal as possible, so that the lum brickell origin will cover the point of the junction between the graft and the tendons. We usually excise a small portion of the palmer upon neurosis and very carefully remove all of the thickened sheath and perry tenderness tissues here in the palm, you will notice now as these tendons are exposed that there is a thin filmy layer of scar surrounding them and though they appear to be fairly free, they are adherent at the level of the metacarpal pulley. Once this is freed the tendons and he lifted up notice the little adhesions holding one to the other and to the deeper structures. The point of greatest adherence of the tenant is in this metacarpal pulley. And here we are careful to excise all of the thick and surrounding sheet. The supplements and the profundis tenants are separated here so that later we can withdraw this supplements in the forearm and cut it off at the muscular tendon. This junction. This will also enable us to free the profundis in the palm, removing all of this thickened carotene in this tissue in the film of scar which lies over the lumber ical muscle, the lumber ical here is being freed so that our junction can be made as far proximal as possible, notice the full amplitude of motion that is now present. We have found we can use the profundis as the motor even many years after the original injury, a short incision just above the wrist will expose the palmer as long as tendon. And also enable us to take out the proximal portion of the supplements. Years ago we thought if we attached the proximal supplements to the profundity of the same finger that had added to the strength of grip, we have found it since that this causes more problems than it tends to solve. So now we simply divide the tendon as far approximate as possible and allow the end to retract the palmer's longest is to be removed through two incisions, this one at the wrist and another higher in the forearm. It's not necessary to make a longitudinal incision and remove the so called parity non along with the palmer's longest. Perhaps if the finger was badly scarred, this might add something to the result. But we have found that in most cases it is best to remove the tendons, simply just avoiding damage to its surface, not making any attempt to remove any surrounding tissue with it in the proximal portion of the form. The tendon lies deep to the fashion of course, and that the fashion must be opened in order to isolate the tendon. The palmer's longest is used by preference as a graft. If it is not present, we could use the proximal portion of the suppleness of the same digit or we could use one of the toe extensive. We feel that the planned terrorist tendon is too small in diameter. Suture has now passed through the distal end of the palmer as long as tendon. This is the panel pull a wire suture. It's number 34. Wire Woven back and forth through the Tendon with a pullout loop to enable it to be withdrawn later At the end of three weeks. When the future is no longer necessary. It's well to avoid any kinks in the wire when it's being placed for a kink in the wire will weaken it and may cause it to rupture later under some stress. Now these two ends of the wire which have been brought out the end of the tendon, will be passed through the terminal phalanx, utilizing the guide wire that we placed before and by traction on this wire. We draw the raw end of the tendon into the opening and the bone. We have tendon to bone attachment, not tending to scar, not tending to tendon or tending to curiosity. We feel that this method gives adequate fixation, and if the tenant is held in place for three weeks, healing will be sufficient to withstand the pull of the tendon. The wire after being passed through the fingernail is tied over a button and then the proximal loop, the pullout loop is brought out the finger on the volar surface in line with the opening in the bone traction on this later will withdraw the suture material. Now the 10ant has passed through the police and will be placed in the palm and then making traction on it. We can duplicate the motion of the finger and show that there are no adhesions and no limitations in the joints and that the tendon will be enabled to flex the finger completely notice the great amplitude that is necessary and a flexor tendon to fully flex a digit. Here is the suture in the fashion at the level of the middle joint which we talked about before this suture is placed before the proximal suture line in the tendon because we want to put the finger in a few degrees of flexion, and if we made our proximal tendon attachment we would no longer have control in this position. Now the problem, how do you determine the tension or the length of the graft? In other words, we feel that if the risk is put in a neutral position and you look at the hand, the normal fingers will be in semi flexion. If we adjust the tension or the length of the graft so that the involved digit is in slightly more flexion than the others. This will be the approximate correct position. Once this has been determined the remaining portions of the tendons are excised, making sure that the junction will be as far approximate as possible. And then these two Tendon ends will be united with the number 34 buried wire suture placed again according to the method that was described by Banel. The future is woven in and out of the tendon, avoiding any kinks in the wire and the tendons approximated end to end. We feel this is possible even though there is a slight difference in the size of the graft and the profundis tendon. It is only if there is a large difference in diameter that one need go to other methods of approximations such as poverty. Simple end to end suture provides adequate healing, adequate strength and will withstand the full pull of the muscles at a later date. Now the future has been placed in the proximal end in the profundity, and here it will be placed in the ground. Notice how the future has passed through the cut end of the tendon first, and then out through the tendon more distantly. The damaged portion in the clamp, it's been cut off. The tenant ends are approximated, they are actually over approximated. There's an accordion like effect here. The ruins of the wire are pressed down into the tendon, and you will notice that our junction is now almost automatically covered with alum brickell muscle. There's no objection to placing a few fine sutures in the american muscle, but if you do this you must pull the lum brickell distillate before it's attached on the tendon. Otherwise you will interrupt and interfere with the smooth functioning of the finger later here, one or two fine sutures are simply placed to hold the lumber ical around the proximal junction. At this point the tourniquet is removed. Bleeding points are litigated after maintaining pressure for several minutes, and the hand is covered with fluff. Cause stocking it, some sheet wadding and a posterior plaster bandage. Now we want to split this hand with the wrist and palm reflection, and we want to prevent extension of the finger, but we do not want anything on the volar surface of that finger that will impair its flexion. If the patient should unconsciously or involuntarily flex this finger, we do not want any of this flexion to be against resistance because this means tension on our fresh suture line, so the splint is posterior, but the entire volar surface of the finger remains free. We want to be able to see the tip of the finger, see that the circulation is maintained and be sure that there is nothing here that the finger will flex against in case of involuntary motion. This position of the hand with the wrist and palm reflection will be maintained for the first three weeks. Then the pull out wire is removed now the hand will still be kept in the wrist and palm reflection, but the patient will be allowed to remove the splint carefully protecting this position, wash the hand with luke warm, soapy water and to start gentle active motion. It is important that the joints have a full range of motion and may be necessary to help him buy some passive manipulation. We maintain the protection by not Dorsey flexing the wrist Until the end of the 4th week. Now, at about the end of the fourth week or the early in the fifth week there are two maneuvers that are important and it may help to provide a better range of motion in the tendon. First of all, if the finger is held with the metacarpal financial joint in full extension and the patient asked to flex voluntarily all of the forces now being placed upon the tendon to slip it through the finger. The second maneuver is to passively flex the metacarpal financial joint and the interface Langil joint, and then to passively hyper extend the distal joint and then gradually extend the middle joint of the finger. This tends to slip the tendon through the finger and thus break up a few adhesions. Now, at the 5th week we can also advise a little stronger active flexion, But this should be guarded until the 6th week. At least. We would prefer that a man not do any type of heavy work until after the sixth week and perhaps even the eighth week would be even better. Now. Now the results of a tendon graft will depend upon many factors. First of all, the proper choice of patients. Age makes a great difference. The type of the tissue, the amount of scarring, the length of time sits injury. Perhaps another factor, but the proper choice of procedure and the necessary proper technique in carrying it out. Then adequate postoperative care and follow up. And finally a patient who is willing to undergo a certain amount of discomfort and exercise in order to obtain the most desired results. Mm. Hmm.