Navegando por Palavras-chave "Bone Transplantation"
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- ItemAcesso aberto (Open Access)Efeito do adesivo butil-2-cianoacrilato em osteotomias e enxerto ósseo em coelhos: aspecto macroscópico e radiográfico(Sociedade Brasileira de Ortopedia e Traumatologia, 2012-10-01) Xavier, Mário Sérgio Viana; Leite, Vilnei Mattioli [UNIFESP]; UNIVÁS FACIMPA; Universidade Federal de São Paulo (UNIFESP)OBJECTIVE: To evaluate the effect of butyl-2-cyanoacrylate tissue adhesive in osteotomies and bone grafts, with regard to macroscopic and radiographic characteristics. METHODS: Forty-eight rabbits were used, randomly divided into four groups of 12 animals, with observation periods of two, four, eight and 16 weeks. Both thoracic limbs were operated in each animal and two osteotomies were performed in each of the radii, withdrawing a bone fragment (bone graft) of 1 cm in length. On one side, the bone graft was then replaced and a drop of adhesive was applied to each of the osteotomies. On the other side, the same procedure was performed without applying the adhesive. The rejection level for the nullity hypothesis was set at 0.05% or 5%. RESULTS: Blue marks were present in all the surgical specimens in which adhesive was applied. From the fourth week onwards, there was absence of movement of the bone grafts with adhesive and control. In group A, in the proximal osteotomies with adhesive, there was less deviation of the bone graft (p = 0.02). In group C, the union (p = 0.03) and the integration of the bone graft (p = 0.02) were better in the proximal osteotomies with adhesive. CONCLUSIONS: The adhesive was not completely metabolized within 16 weeks. There was clinical consolidation of the osteotomies within four weeks. The adhesive stabilized the bone graft within the first weeks and did not interfere with the consolidation of the osteotomies, or the integration of the bone graft in radiographic observations.
- ItemAcesso aberto (Open Access)Tratamento das fraturas do terço distal do rádio pela fixação externa e enxerto ósseo(Sociedade Brasileira de Ortopedia e Traumatologia, 2005-01-01) Angelini, Luiz Carlos; Albertoni, Walter Manna [UNIFESP]; Faloppa, Flávio [UNIFESP]; Universidade Metropolitana de Santos; Universidade Federal de São Paulo (UNIFESP)The author presents a prospective study in which he uses the external fixation method associated with the autogenous bone graft for the management of articular and metacarpal distal radius fractures. Thirty-six patients with a mean age of 52,2 years were treated. The follow-up had na average duration of 36,2 months. The stability of the reduction and its maintenance were assured by the external fixation with the autogenous bone graft. In the patients who underwent a densitometric analysis of the bone mass, the presence of the autogenous mass showed statistically steady in the long run. With this technique the rehabilitation could be antecipated had began in the immediate postoperative period, thas favoring the mobilization. In the fourth week the external fixation device is removed, this restoring the free movement of the wrist, except for the extension which is hampered by an splint of dorsal situation for two additional weeks. In the review of the data resulting from the treatment the anatomical and functional features were considered. The anatomical findings were obtained from radiographic examinations on the patients. The analysis of these outcomes were based on the Scheck method (1962) and were graded excellent in 72% of the cases, and good in 28%, satisfactory as a whole. The data related to the function obtained were evaluated based on the Green And O'Brien system (1978) modified by Cooney et al.(1987). In the 24th week, 14% were considered insatisfactory and 86% satisfactory. At 12 months and in december,1999, they were considere satisfactory as a whole. The complications detected during the treatment were: pine site infections in 8,31% of the cases, and transient symptoms of post-traumatic sympathetic dystrophy in 8,33%, all of them thoroughly resolved with appropriate therapy. In 33% of the patients there were also identified signs of post-traumatic arthristis of the ulnal styloid process which however evolved asymptomatically in all cases under review.
- ItemAcesso aberto (Open Access)Virtual planning and construction of prototyped surgical guide in implant surgery with maxillary sinus bone graft(Sociedade Brasileira para o Desenvolvimento da Pesquisa em Cirurgia, 2013-09-01) Martins, Renato Jahjah Cunha [UNIFESP]; Lederman, Henrique Manoel [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)PURPOSE: To evaluate the efficacy of associating techniques of bone grafting in the maxillary sinus with the use of a prototyped surgical guide for planning and positioning dental implants in total edentulous maxillae, rehabilitated after six months. METHODS: Eight patients consecutives with totally edentulous maxilla presenting few remaining bone in the posterior alveolar ridge, associated with pneumatization of the maxillary sinus were selected. Twenty eight Brånemark RP 10mm implants were installed in 14 maxillary sinuses. The surgical planning for the implant installation was performed with the DentalSlice software by means of a computerized tomography. The obtained images were used for building a surgical guide that, placed over the maxilla, showed the exact position for the implants installation (prototyped surgical guide). The portion of the implants that went into the maxillary sinus was covered by an autogenous bone graft. RESULTS: The patients were re-evaluated six months after the surgery and a 100% success rate was achieved. All of the implants presented no mobility or symptoms, permitting an oral rehabilitation with total fixed screw-retained prosthesis over the implants. CONCLUSION: The technique of associating implants and bone graft in the maxillary sinus aided by a prototyped guide planned on DentalSlice has showed itself efficient for positioning implants and for quantifying and locating the bone graft.