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(1/180) Successful replantation of a hand amputated through the metacarpus.

A successful replantation is reported of a hand completely severed by a circular saw through all five metacarpals. The sequence of primary reconstruction of all important structures beginning three hours after the injury and the functional results eighteen months later are presented.  (+info)

(2/180) Use of a platysma myocutaneous flap for the reimplantation of a severed ear: experience with five cases.

CONTEXT: The traumatic loss of an ear greatly affects the patient because of the severe aesthetic deformity it entails. The characteristic format of the ear, with a fine skin covering a thin and elastic cartilage, is not found anywhere else in the human body. Thus, to reconstruct an ear, the surgeon may try to imitate it by sculpting cartilage and covering it with skin. OBJECTIVE: To use a platysma myocutaneous flap for the reimplantation of a severed ear in humans. DESIGN: Case report. SETTING: Emergency unit of the university hospital, Faculty of Medicine, Ribeirao Preto - USP. CASE REPORT: Five cases are reported, with whole ear reimplantation in 3 of them and only segments in 2 cases. The surgical technique used was original and was based on the principle of auricular cartilage revascularization using the platysma muscle. We implanted traumatically severed auricular cartilage into the platysma muscle. The prefabricated ear was later transferred to its original site in the form of a myocutaneous-cartilaginous flap. Of the 5 cases treated using this technique, 4 were successful. In these 4 cases the reimplanted ears showed no short- or long-term problems, with an aesthetic result quite close to natural appearance. In one case there was necrosis of the entire flap, with total loss of the ear. The surgical technique described is simple and utilizes the severed ear of the patient. Its application is excellent for skin losses in the auricular region or for the ear itself, thus obviating the need for microsurgery or the use of protheses or grafts.  (+info)

(3/180) Influence of extracorporeal irradiation on the reintegration of autologous grafts of bone and joint. Study in a canine model.

We studied the effects of irradiation on the reintegration of autologous osteoarticular grafts over a period of 24 weeks in a canine model. In 16 foxhounds the medial femoral condyle was resected, irradiated and immediately replanted. In the control group resection and replantation were performed without irradiation. Reintegration was assessed by macroscopic analysis, histology, radiography and gait analysis. Reintegration was equal at 12 weeks, but significantly inferior in the irradiated group after 24 weeks with delayed bone remodelling. The articular cartilage showed modest degeneration. Conventional radiography and histology showed corresponding changes. Limb function was adequate but the gait was inferior in the treated group.  (+info)

(4/180) Surgical treatment of recurrent abdominal aortic aneurysm in a patient with systemic lupus erythematosus.

Reports of true abdominal aortic aneurysms (AAAS), especially those due to severe inflammation, in patients with systemic lupus erythematosus (SLE) are very few in number. However, we had the experience of surgically treating a recurrent AAA due to severe inflammation found in a patient with SLE. The recurrence took place after an earlier operation for an infrarenal AAA and involved the left renal artery. In both situations, the previous infrarenal aaa and the recurrence, the aneurysms demonstrated more rapid growth and more irregularities in shape. Etiology of the AAA might be a combination of Takayasu's arteritis and SLE because the two entities appeared to have overlapped.  (+info)

(5/180) Early reactions after reimplantation of the tendon of supraspinatus into bone. A study in rabbits.

In 14 rabbits we determined the origin of the cells effecting healing of the tendon of supraspinatus inserted into a bony trough. After two weeks both the cellularity of the underlying bone and the thickness of the subacromial bursa were significantly increased in the operated compared with the control shoulders. The cellularity of the stump of the tendon, however, was significantly decreased in the operated shoulders. In this model, both the underlying bone and the subacromial bursa but not the stump of the tendon contributed to the process of repair. We conclude that the medial stump should be debrided judiciously but that cutting back to bleeding tissue is not necessary during repair of the rotator cuff. Moreover, great care should be taken to preserve the subacromial bursa since it seems to play an important role in the healing process.  (+info)

(6/180) Experimental and clinical application of microvascular surgery.

The object of these studies was the development of a technique whereby a vessel of 1 mm or smaller could be easily anastomosed. In total replantation of rabbit ears, only 3 ears survived replantation in 80 attempts in the first series. In the second series of 80, 35 ears survived completely, 3 ears partially survived and 8 additional ears survived the postoperative period, but the rabbits died within 2 weeks due to diarrhea. Thirty-five ears failed and venous obstruction was the primary cause. Free transplantation of a great toe and a second toe to recreate a thumb is also described. The operative procedure of the great toe to thumb transplantation does not appear to be difficult. Six months after operation, the function of the newly created thumb was good. The second toe to thumb transfer was more difficult technically compared to the great toe to thumb transfer due to the much smaller size of the digital vessels of the second toe. However, removal of the second toe causes less disadvantage than the removal of the great toe. Nine months postoperatively, the function of the newly created thumb was satisfactory. Digital replantation is described with 36 cases with 65 complete finger amputations. Thirty-two with 45 fingers survived the reattachment. Repair of one artery per digit is sufficient, although two probably are better. A minimum of 2 veins per digit must be repaired. Prompt re-exploration is imperative if postoperative circulatory impairment occurs. In this group, arterial obstruction was more frequent than venous obstruction as the cause of replantation failure. The function of the replanted fingers is satisfactory in the majority of the cases.  (+info)

(7/180) The musculocutaneous nerve.

We have analysed the results of repair of traumatic lesions of the musculocutaneous nerve in 85 patients, which were graded by Seddon's modification of the Medical Research Council system into three types of injury: open 'tidy', open 'untidy' and closed 'traction'. They were also correlated with associated arterial injury. There were 57 good, 17 fair and 11 poor results. The type of injury was the most important factor in determining the result; 12 of 13 open-tidy lesions gave good results compared with 30 of 48 closed-traction lesions. The results were better when the nerves were repaired within 14 days of injury and when grafts were less than 10 cm long. They were worse in the presence of associated arterial or bony injury.  (+info)

(8/180) Myocardial blood flow and flow reserve after coronary reimplantation in patients after arterial switch and ross operation.

BACKGROUND: Coronary reimplantation is used in therapy for congenital heart disease, such as in the arterial switch (ASO) and Ross operations. The adequacy of myocardial perfusion may remain a matter of concern. The aim of the present study was to stratify the effect of coronary reimplantation on myocardial perfusion and to highlight the clinical relevance of any attenuation in myocardial perfusion. METHODS AND RESULTS: A total of 21 children with transposition of the great arteries at a mean interval of 11.2+/-2.9 years after ASO and 9 adolescents at a mean interval of 4.2+/-2.1 years after the Ross procedure were investigated. All patients were asymptomatic and had a normal exercise capacity. On stress echocardiography, 2 of the ASO patients had dyskinetic areas within the left ventricular myocardium, and 5 had adenosine-induced perfusion defects on positron emission tomography. No coronary obstruction was detected on coronary angiography in any patient, but a common finding was right coronary dominance and a small caliber of the distal part of the left anterior descending artery. Coronary flow reserve (CFR) was significantly reduced in all patients after ASO when compared with 10 normal healthy volunteers (age, 25.6+/-5.3 years). CFR was normal in the 9 patients who had the Ross operation (age, 19.2+/-7.6 years); exercise-induced perfusion defects were not detected in the Ross patients. CONCLUSIONS: Children after ASO are asymptomatic, without clinical signs of coronary dysfunction. In contrast to patients who had the Ross operation, stress-induced perfusion defects and an attenuated CFR were documented. The prognostic implications of these findings and the clinical consequences are unclear; nevertheless, close clinical follow-up of ASO patients is mandatory.  (+info)