ARNALDO AMADO FERREIRA NETO
Projetos de Pesquisa
Unidades Organizacionais
Instituto de Ortopedia e Traumatologia, Hospital das Clínicas, Faculdade de Medicina
LIM/41 - Laboratório de Investigação Médica do Sistema Músculoesquelético, Hospital das Clínicas, Faculdade de Medicina
LIM/41 - Laboratório de Investigação Médica do Sistema Músculoesquelético, Hospital das Clínicas, Faculdade de Medicina
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bookPart Infecção em prótese de ombro(2013) BOLLIGER NETO, Raul; PRADA, Flavia de Santis; MALAVOLTA, Eduardo Angeli; GRACITELLI, Mauro Emilio Conforto; FERREIRA NETO, Arnaldo Amado- ARTHROSCOPIC LATARJET PROCEDURE: SAFETY EVALUATION IN CADAVERS(2013) GRACITELLI, Mauro Emilio Conforto; FERREIRA NETO, Arnaldo Amado; BENEGAS, Eduardo; MALAVOLTA, Eduardo Angeli; SUNADA, Edwin Eiji; ASSUNCAO, Jorge HenriqueObjective: To evaluate the safety of arthroscopic Latarjet procedure in cadavers. Methods: Twelve cadaveric shoulders underwent arthroscopic Latarjet procedure in our laboratory for arthroscopy, by four different surgeons. Following surgery, the specimens were subjected to radiographic examination and evaluated by an independent examiner. Nineteen parameters were evaluated, including the coracoid graft fixation, positioning and angulation of the screws, neurological damage and integrity of tendons. Results: Four procedures were considered to be satisfactory, with no difference among the surgeons. The mean angulation of the screws was 27.2 degrees. The subscapularis splitting was, on average, 17.8mm from the upper edge. The coracoid graft was properly positioned relative to equator of the glenoid in 11 cases. There was no injury to the axillary or musculocutaneous nerves. The main complications were: interposition of soft tissue, suprascapular nerve injury, articular deviation of the graft, diastasis and conjoined tendon injury. Conclusion: The arthroscopic Latarjet procedure is a complex technique in which each step must be precise to reduce the risk of complications. Our study showed a high risk of failure of the procedure. Level of Evidence IV, Case Series.
- Humeral internal rotation osteotomy for the treatment of Erb-Duchenne-type obstetric palsy: clinical and radiographic results(2013) ASSUNCAO, Jorge Henrique; FERREIRA NETO, Arnaldo Amado; BENEGAS, Eduardo; BOLLIGER NETO, Raul; PRADA, Flavia Santis; MALAVOLTA, Eduardo Angeli; GRACITELLI, Mauro Emilio Conforto; CAMANHO, Gilberto LuisOBJECTIVE: To evaluate the functional and radiographic results in patients undergoing shoulder anterior soft tissue stretching in association with open reduction and internal rotation osteotomy to centralize the humeral head as a treatment for Erb-Duchenne obstetric palsy sequelae. METHOD: A total of 35 patients underwent this surgical treatment, and the mean follow-up was 4.6 years. The Mallet scale was applied before and after the surgical procedure. A total of 20 patients underwent computed tomography to assess the glenoid version and humeral head subluxation. RESULTS: Functional improvement was achieved, as evidenced by an increase in the Mallet scale score from 12.14 to 16.46 (p<0.001). The correction of retroversion was achieved once the glenoid version ranged from 21.4 to - 12 degrees (p<0.001). The humeral head subluxation improved from 6.5 to 35.2% (p<0.001). Patients older than 6 years of age did not achieve glenohumeral joint improvement with respect to dysplastic abnormalities. CONCLUSION: Internal rotation osteotomy in association with the stretching of anterior soft tissues of the shoulder in patients under the age of 7 years provided improvements in the function, retroversion, and subluxation of the glenohumeral joint.
- Outcomes evaluation of locking plate osteosynthesis in displaced fractures of the proximal humerus(2013) GRACITELL, Mauro Emilio Conforto; LOBO, Frederico Lafraia; FERREIRA, Gustavo Maximiano Aliperti; PALMA, Marcos Vianna da; MALAVOLTA, Eduardo Angeli; BENEGAS, Eduardo; KOJIMA, Kodi Edson; FERREIRA NETO, Arnaldo Amado; SILVA, Jorge dos SantosObjective: To evaluate functional outcomes, radiographic findings and complications of proximal humeral fractures treated with locking plates and to determine prognostic factors for successful clinical outcomes. Methods: Forty patients undergoing internal fixation of fractures of the proximal humerus with the Philos(r) plate were included in the study. The surgeries were performed between 2004 and 2011 and the patients underwent radiographic and clinical evaluation, by Constant -Murley and Dash score. Outcomes were analyzed by use of multivariate regression with several different variables. Results: Patients were on average of 61.8 ± 16.28 years, and most were female (70%). The Constant -Murley score was 72.03 ± 14.01 and Dash score was 24.96 ± 19.99. The postoperative radiographs showed a head-shaft angle of 135.43º± 11.82. Regression analysis showed that the patient's age and the Hertel classification influenced the Constant -Murley scale (p = 0.0049 and 0.012, respectively). Other prognostic criteria such as Neer and AO classification, head-shaft angle, the presence of metaphyseal comminution and extension of the humeral metaphyseal fragment showed no effect on prognosis. Complications occurred in four patients (10%). Conclusion: The fixation with the Philos(r) plate provided good clinical and radiographic results in fractures of the proximal humerus, with a low complication rate. Patient's age and Hertel classification were defined as prognostic factors that led to worse functional outcomes.
- Platelet-rich plasma in rotator cuff lesions(2013) MALAVOLTA, Eduardo Angeli; GRACITELLI, Mauro Emilio Conforto; FERREIRA NETO, Arnaldo Amado
- SHOULDER ARTHROPLASTY IN OSTEOARTHRITIS: CORRELATION BETWEEN FUNCTION AND RADIOGRAPHIC PARAMETERS(2013) GRACITELLI, Mauro Emilio Conforto; DUARTE, Fernando Aires; TOFFOLI, Rogerio Padovani; BURNATO, Joao Henrique; MALAVOLTA, Eduardo Angeli; FERREIRA NETO, Arnaldo AmadoObjectives: To evaluate the correlation between radiographic parameters and functional assessments of patients with osteoarthritis of the shoulder who underwent shoulder arthroplasty and to describe the functional outcomes of this procedure in our institution. Methods: We evaluated 21 patients (22 shoulders) who underwent shoulder arthroplasty between 1998 and 2010 and with a minimum follow-up of 12 months. Clinical evaluation was performed using the Constant-Murley scale, UCLA, EVA and by measuring the active motion. We analysed preoperative (distance between the top of the head and the humerus and the acromion, superior migration, neck angulation, medial ""offset"", subluxation, glenoid erosion) and postoperative radiographic parameters (rod inclination, migration of components and loosening). Results: Patients showed significant improvement in all parameters: flexion (p = 0.0083), abduction (p = 0.0266), external rotation (p = 0.0062), Constant-Murley (p = 0.0001), UCLA (p < 0.0001) and VAS (p = 0.0002). The superior migration of the humerus showed a significant correlation with UCLA and Constant-Murley scores (p = 0.0480 and p = 0.0110, respectively). The other radiographic parameters showed no correlation with the clinical outcomes. Conclusion: The superior migration of the humerus is related to worse clinical scores.
- Comments on: ""Centering osteotomy for treatment of posterior shoulder dislocation in obstetrical palsy"" by PR Vilaca, MK Uezami, A Zoppi Filho published in Orthop Tramatol Surg Res 2012; 98: 199-205(2013) FERREIRA NETO, A. A.; ASSUNCAO, J. H.; FERREIRA FILHO, A.; MALAVOLTA, E. A.; GRACITELLI, M. E. C.