RICARDO TEIXEIRA E SILVA
Projetos de Pesquisa
Unidades Organizacionais
PAHC, Hospital das Clínicas, Faculdade de Medicina - Médico
7 resultados
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- TOMOGRAPHIC STUDY OF THE S2-ALAR-ILIAC SCREW TECHNIQUE IN BRAZILIAN MEN(2019) SOMBRA, LUIS PIMENTEL; SILVA, RICARDO TEIXEIRA E; ARAÚJO, THIEGO PEDRO FREITAS; BIRAGHI, OLAVO LETAIF; MARCON, RAPHAEL MARTUS; CRISTANTE, ALEXANDRE FOGAÇA; BARROS FILHO, TARCÍSIO ELOY PESSOA DEABSTRACT Objective The use of pedicle screws was a milestone for modern spinal surgery. This type of fixation, due to its superior biomechanics, gave greater fixation power, greater capacity to withstand the pulling forces and, therefore, greater stability and lower rates of pseudoarthrosis. Fixation of the lumbosacral junction, even with the development of these new implants, remains a challenge mainly because the considerable rates of pseudoarthrosis. The use of iliac screws solves the biomechanical difficulties. However, its use shows high rates of surgical wound problems. The S2-Alar-Iliac screw (S2AI) came as a solution to these complications. The lack of studies about anatomical and anthropometric parameters in the Brazilian population justifies the study. Methods Eleven hip tomographies of Brazilian adult males were analyzed by four evaluators. The right and left sides were considered. In each patient, measurements were made of greater and shorter bone length, greater and smaller bone diameter, distance from the entry point to the skin, sagittal and axial angles related to the hypothetical insertion of an S2AI screw and compared to the same measurements obtained with the iliac screw. Results The mean bone length was 136.7 mm, the greatest bone diameter was 24.8 mm, the smallest bone diameter was 19.7 mm and the distance from the screw to the skin was 42.1 mm for the S2AI screw. Conclusions The obtained data present an average of the sample that can be useful in the decision of the surgical technique in the studied group. Level of evidence I; Diagnostic Studies (Anatomical Investigation).
bookPart Hérnia de disco lombar: tratamento cirúrgico e cuidados perioperatórios(2020) MEYER, Guilherme Pereira Corrêa; SILVA, Ricardo Teixeira e- Adult Degenerative Scoliosis(2021) CRISTANTE, Alexandre Fogaça; SILVA, Ricardo Teixeira e; COSTA, Guilherme Henrique Ricardo da; MARCON, Raphael MartusAbstract Populational aging increases the incidence of musculoskeletal degenerative processes, such as adult scoliosis (AS). Adult scoliosis is defined as a spinal deformity in the coronal plane with a Cobb angle > 10º. Adult scoliosis may be iatrogenic or result from a degenerative process (scoliosis de novo) or a pre-existing scoliosis. Adult scoliosis is a potentially limiting condition that affects a heterogeneous group of patients. Clinical treatment proved to be ineffective and surgery is often indicated. The present paper reviews AS pathophysiology, clinical presentation and diagnosis, in addition to surgical indications and the main techniques currently used.
- COMPARATIVE STUDY OF MICROANASTOMOSIS WITH DISTINCT 10-0 NYLON SUTURES IN RATS(2016) SILVA, Ricardo Teixeira e; BARROS, Thiago Felipe Santos; CARVALHO, Jose Thome de; RIBEIRO, Andre Araujo; PIRES, Andre Fernandes; WEI, Teng HsiangObjective: The aim of this study is to compare micro-sutures commonly used in our midst. Methods: In this double-blind study, 30 Wistar rats were operated randomly divided into three groups matched according to the suture used (Nylon 10-0, 75micron, brands Microsuture (R), Polysuture (R) and Ethicon (R)). We analyzed the number of surgical nodes required, bleeding, surgical time and histological evaluation. Results: There was no significant difference between the amount of stitches of arterial suture per anastomosis. Surgical time was longer in Microsuture (R) group as compared to Polysuture (R) (p <= 0.05). Bleeding in Microsuture (R) group was higher when compared to the others (p < 0.01). In the histological analysis, the Microsuture (R) group showed a greater tendency to develop fibrosis and aneurysm in surgical site than the others (p < 0.01 and p <= 0,05, respectively). Similarly, the Ethicon (R) group showed less tendency to myointimal proliferation than the rest. (p = 0.025). Conclusion: The results confirm the relevance of the choice of surgical thread as an independent determining factor for the success of the procedure, besides serving as a rational subsidy for a better cost-benefit analysis.
- Management of patients with spinal cord injury during the coronavirus disease pandemic(2020) SILVA, Ricardo Teixeira e; CRISTANTE, Alexandre Fogaca; MARCON, Raphael Martus; BARROS-FILHO, Tarcisio Eloy Pessoa de
- Medical care for spinal diseases during the COVID-19 pandemic(2020) SILVA, Ricardo Teixeira e; CRISTANTE, Alexandre Fogaca; MARCON, Raphael Martus; BARROS-FILHO, Tarcisio Eloy Pessoa de
- ROLE OF DIFFERENT HORMONES IN THE PATHOGENESIS AND SEVERITY OF ADOLESCENT IDIOPATHIC SCOLIOSIS(2017) SILVA, Ricardo Teixeira e; FERNANDES, Renan Jose Rodrigues; ONO, Allan Hiroshi de Araujo; MARCON, Raphael Martus; CRISTANTE, Alexandre Fogaca; BARROS FILHO, Tarcisio Eloy Pessoa deObjective: To evaluate the hormonal profile of patients with adolescent idiopathic scoliosis (AIS) and its relationship to the severity of the curvature and quality of life. Method: Patients with scoliosis (Cobb angle above 10 degrees), of both genders, diagnosed after 10 years of age were included, excluding those who presented other condition that could lead to scoliosis. Serum levels of 25-hydroxyvitamin D (25-OHD), cortisol and gastrin were correlated with Cobb angle and quality of life, measured by the SRS-30 questionnaire. Results: The levels of 25-OHD decreased in 97% of patients. There was an inverse relationship between gastrin levels and quality of life (p = 0.016). Moreover, there was an inverse correlation between the value of Cobb angle and quality of life (p = 0.036). There were no changes in cortisol levels. There was no correlation between Cobb angle and any of the hormones measured. Conclusion: The patients had levels of 25-OHD diminished, strengthening the hypothesis of its involvement in the development of AIS. This study also suggests that increased gastrin levels may be associated with a worse quality of life in patients with AIS.