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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Resultados de Busca
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- Accuracy of preoperative MRI in the diagnosis of disorders of the long head of the biceps tendon(2015) MALAVOLTA, Eduardo A.; ASSUNCAO, Jorge H.; GUGLIELMETTI, Cesar L. B.; SOUZA, Felipe F. de; GRACITELLI, Mauro E. C.; FERREIRA NETO, Arnaldo A.Objetives: To evaluate the accuracy of magnetic resonance imaging (MRI) in the detection of disorders of the long head of the biceps tendon (LHBT). The secondary objective was to investigate predictive factors for tears and instability. Methods: This retrospective case series involved patients undergoing shoulder arthroscopy due to rotator cuff injury. MRI was performed in a 1.5 T scanner and was evaluated by a musculoskeletal radiologist. The findings were compared with those of arthroscopic inspection. Results: A total of 90 shoulders were analyzed. Regarding tears, there was 67% sensitivity and 98% specificity. Regarding instabilities, the values were 53% and 72%, respectively. Tears and fatty degeneration of the infraspinatus are predictive factors for tears of the LHBT. Tears of the subscapularis and infraspinatus, retraction of the supraspinatus and infraspinatus equal to or greater than 30 mm, and fatty degeneration of the infraspinatus and subscapularis are predictive factors for instability. Conclusion: Compared to arthroscopy, the shoulder MRI has a sensitivity of 67% and a specificity of 98% for the detection of complete tears of the LHBT. For instability, the values are 53% and 72%, respectively.
- Osteoid osteoma of the glenoid: Arthroscopic treatment(2015) MALAVOLTA, E. A.; ASSUNCAO, J. H.; REBOLLEDO, D. C. S.; GRACITELLI, M. E. C.; CORREIA, L. F. M.; FERREIRA NETO, A. A.; CAMARGO, O. P. deOsteoid osteoma is a benign tumor that is rarely found in the scapula. We report a clinical case involving a 36-year-old female patient who suffered from progressive pain in her right shoulder for 1 year. This patient was initially diagnosed with impingement syndrome and was treated unsuccessfully with medication and physical therapy for approximately 2 months. Based on imaging exams, a juxta-articular osteoid osteoma of the glenoid was identified. The patient underwent a shoulder arthroscopy that included tumor removal and treatment of the resulting chondral lesion. At 6-, 12- and 36-month assessments, the patient was asymptomatic, with a normal range of motion and experienced a pain intensity corresponding to 0 points on the Visual Analog Scale (VAS) and 35 points on the University of California, Los Angeles (UCLA) Scale. A postoperative MRI indicated the absence of any residual tumor tissue or inflammatory signs. We believe that the approach described in this paper allows juxta-articular osteoid osteomas to be accessed in a minimally invasive manner and permits not only adequate resection but also the treatment of chondral lesions that could remain after tumor resection.
- PROGNOSTIC FACTORS FOR CLINICAL OUTCOMES AFTER ROTATOR CUFF REPAIR(2015) PECORA, Jose Otavio Reggi; MALAVOLTA, Eduardo Angeli; ASSUNCAO, Jorge Henrique; GRACITELLI, Mauro Emilio Conforto; MARTINS, Joao Paulo Sobreiro; FERREIRA NETO, Arnaldo AmadoObjective: To identify prognostic factors of postoperative functional outcomes. Methods: Retrospective case series evaluating patients undergoing rotator cuff repair, analyzed by the UCLA score (pre and 12-month postoperative) and Magnetic Resonance Imaging (preoperative). Patients' intrinsic variables related to the injury and intervention were evaluated. Multivariate linear regression analysis was performed to determine variables impact on postoperative functional assessment. Results: 131 patients were included. The mean UCLA score increased from 13.17 +/- 3.77 to 28.73 +/- 6.09 (p < 0,001). We obtained 65.7% of good and excellent results. Age (r = 0.232, p = 0.004) and reparability of posterosuperior injuries (r = 0.151, p = 0.043) correlated with the functional assessment at 12 months. After multivariate linear regression analysis, only age was associated (p = 0.008). Conclusions: The surgical treatment of rotator cuff tears lead to good and excellent results in 65.6% of patients. Age was an independent predictor factor with better clinical outcomes by UCLA score in older patients.
- Full-thickness supraspinatus tendon tears: correlation of findings by arthroscopy and magnetic resonance imaging(2015) MALAVOLTA, Eduardo Angeli; ASSUNCAO, Jorge Henrique; ARAUJO, Alex Oliveira de; SEITO, Carlos Augusto; GRACITELLI, Mauro Emilio Conforto; BORDALO-RODRIGUES, Marcelo; FERREIRA NETO, Arnaldo AmadoThe main aim of this study was to correlate measurements of the width and retraction of isolated full-thickness supraspinatus tendon tears determined by magnetic resonance imaging (MRI) with measurements recorded by arthroscopy using a continuous millimetre scale. A total of 53 individuals with isolated supraspinatus tears and retraction < 30 mm underwent arthroscopy at our centre. Tear width and retraction measured by arthroscopy (reference standard) and MRI (index test) on a continuous millimetre scale were compared. All measurements were performed by a single radiologist blinded to intra-operative findings and one surgeon who had previous access to MRI results. The average tear retraction was 12.60 +/- 4.89 mm by arthroscopy and 16.81 +/- 6.29 mm by MRI. Those measures exhibited moderate correlation (r = 0.643, p < 0.001) and an average difference of 4.21 mm (p < 0.001). Average tear width was 12.87 +/- 4.15 mm by arthroscopy and 14.19 +/- 5.20 by MRI. Those measures exhibited moderate correlation (r = 0.526, p < 0.001) and an average difference of 1.32 mm, which was not statistically significant (p = 0.109). Measures of retraction and width obtained by MRI and arthroscopy exhibited moderate correlation in small- or medium-sized supraspinatus tears.