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
7 resultados
Resultados de Busca
Agora exibindo 1 - 7 de 7
- Locking intramedullary nails compared with locking plates for two- and three-part proximal humeral surgical neck fractures: a randomized controlled trial(2016) GRACITELLI, Mauro E. C.; MALAVOLTA, Eduardo A.; ASSUNCAO, Jorge H.; KOJIMA, Kodi E.; REIS, Paulo R. dos; SILVA, Jorge S.; FERREIRA NETO, Arnaldo A.; HERNANDEZ, Arnaldo J.Background: Previous studies have shown good clinical results in patients with proximal humeral fractures (PHFs) treated with locking intramedullary nails or locking plates. Our study compared the clinical and radiographic outcomes in patients with 2- and 3-part surgical neck fractures. Methods: In this prospective, randomized controlled trial, 72 patients with 2- or 3-part surgical neck PHFs were randomly assigned to receive fixation with locking intramedullary nails (nail group) or locking plates (plate group). The primary outcome was the 12-month Constant-Murley score. The secondary outcomes included the Disabilities of the Arm, Shoulder and Hand score, the visual analog scale pain score, the shoulder passive range of motion, the neck-shaft angle, and complication rates. Results: There was no significant mean treatment group difference in the Constant-Murley score at 12 months (70.3 points for the nail group vs. 71.5 points for the plate group; P=.750) or at individual follow-up assessments. There were no differences in the 3-, 6- and 12-month Disabilities of the Arm, Shoulder and Hand scores, visual analog scale scores, and range of motion, except for the medial rotation at 6 months. The neck-shaft angle was equivalent between the groups at 12 months. There were significant differences over 12 months in total complication rates (P=.002) and reoperation rates (P=.041). There were no significant differences for the rotator cuff tear rate (P=.672). Conclusion: Fixation of PHFs with locking plates or locking intramedullary nails produces similar clinical and radiologic results. Nevertheless, the complication and reoperation rates were higher in the nail group. Level of evidence: Level I; Randomized controlled trial; Treatment study (C) 2016 Journal of Shoulder and Elbow Surgery Board of Trustees.
- Response to letter to the editor concerning ""The rotation of the humeral head does not alter radiographic evaluation of the head-shaft angle""(2016) MALAVOLTA, Eduardo A.; GRACITELLI, Mauro E. C.; ASSUNCAO, Jorge H.; FERREIRA NETO, Arnaldo A.
article 1 Citação(ões) na Scopus Fracture of the clavicle and second rib: an indirect injury from tricep dips(2016) MALAVOLTA, Eduardo A.; ASSUNCAO, Jorge H.; GRACITELLI, Mauro E. C.; LOBO, Frederico L.; FERREIRA NETO, Arnaldo A.Due to the recent rise in the interest in strength training, an increment in the number of lesions is expected, whether of the tendons, muscles, or bones. We describe a case of fracture involving the middle third of the clavicle and the second rib in a low-demand weightlifter. The fractures occurred suddenly while performing a triceps dips exercise, and the patient had no previous symptoms. He was treated conservatively and was able to return to sports six later. To our knowledge, this is the first study describing the association of these fractures triggered by a single event of muscle. contraction.- Serial structural MRI evaluation of arthroscopy rotator cuff repair: does Sugaya's classification correlate with the postoperative clinical outcomes?(2016) MALAVOLTA, Eduardo A.; ASSUNCAO, Jorge Henrique; RAMOS, Frederico F.; FERREIRA, Thiago C.; GRACITELLI, Mauro E. C.; BORDALO-RODRIGUES, Marcelo; FERREIRA NETO, Arnaldo A.Sugaya's classification is the most commonly used for postoperative evaluation of rotator cuff repairs. However, the correlation between this classification and clinical outcomes after supraspinatus tendon repair were not performed with serial MRI examinations in standardized time intervals. This prospective case series involved 54 patients undergoing repair of the supraspinatus tendon tear. Magnetic resonance imaging (MRI, 1.5 T) was used to determine the Sugaya's classifications at 3, 6, and 12 months, and these data were correlated with the visual analog scale for pain (VAS), Constant and University of California at Los Angeles (UCLA) assessments. Patients with types I, II, and a parts per thousand yenIII of Sugaya's classification experienced pain of 1.27 +/- 1.95, 1.00 +/- 1.40, and 3.43 +/- 3.36, respectively (p = 0.010), according to the VAS. The Constant and UCLA scales did not differ significantly. Type II predominated, though their percentage decreased over time (from 77.8 to 66.7 %), whereas type I became more frequent (from 1.9 to 20.4 %). The pain was more intense in patients classified as types III, IV, or V of Sugaya's classification. The postoperative appearance of the supraspinatus tendon was not correlated with the Constant and UCLA scales. The occurrence of type II, the most prevalent, decreased over time, whereas the occurrence of type I increased; these differences were not significant. Level de evidence: prospective cohort evaluation-level III.
- Comments on: Evaluation of platelet-rich plasma and fibrin matrix to assist in healing and repair of rotator cuff injuries: a systematic review and meta-analysis(2016) MALAVOLTA, Eduardo A.; ASSUNCAO, Jorge H.; GRACITELLI, Mauro E. C.; FERREIRA NETO, Arnaldo A.
- The rotation of the humeral head does not alter radiographic evaluation of the head-shaft angle(2016) MALAVOLTA, Eduardo A.; ASSUNCAO, Jorge H.; PAGOTTO, Raphaella A.; AVELINO, Rafael L.; GRACITELLI, Mauro E. C.; PEREIRA, Cesar A. M.; JACOMO, Alfredo L.; FERREIRA NETO, Arnaldo A.Background: The head-shaft angle is used to plan osteotomies and arthroplasties and to assess the radiographic outcomes of surgical treatment for proximal humerus fractures. There are no published data showing whether different degrees of arm rotation interfere with the evaluation of this angle. Methods: Eighteen humeri from adult cadavers were used. Radiographs were taken with the specimens initially placed in a true anteroposterior position and then subsequently positioned with internal and external rotations of 10 degrees, 20 degrees, and 30 degrees. All radiographs were evaluated by 3 shoulder and elbow surgeons at 2 different times 3 months apart. The head-shaft angle was measured using a picture archiving and communication system. Results: For the humerus in the neutral position, the head-shaft angle was 137 degrees +/- 4 degrees. With the anatomic specimen positioned with increasing external and internal rotations, there was a maximum difference of 2 degrees compared with the value observed in the neutral position, which was not a significant difference (P = .911). Measurements of the head-shaft angle showed a good interobserver correlation coefficient, with a value of 0.788 (0.728-0.839) for all measurements. The intraobserver correlation coefficient ranged from moderate to excellent (0.536-0.938). Conclusion: The head-shaft angle did not change significantly with varying degrees of humeral rotation. The interobserver correlation coefficient showed good reliability, and the intraobserver correlation was moderate to excellent. (C) 2016 Journal of Shoulder and Elbow Surgery Board of Trustees.
- Accuracy of preoperative MRI in the diagnosis of subscapularis tears(2016) MALAVOLTA, Eduardo A.; ASSUNCAO, Jorge H.; GUGLIELMETTI, Cesar L. B.; SOUZA, Felipe F. de; GRACITELLI, Mauro E. C.; BORDALO-RODRIGUES, Marcelo; FERREIRA NETO, Arnaldo A.The subscapularis has received little attention in the orthopedic literature, although such lesions are evident in up to 40 % of arthroscopies. An accurate diagnosis is important in clinical practice, as it affects both patient prognosis and surgical planning. The aim of this study was to evaluate the accuracy of preoperative MRI for the identification of subscapularis tears. Our secondary aim involved the identification of factors that may be predictive for the presence of subscapularis tears. This retrospective case series included patients undergoing shoulder arthroscopy due to rotator cuff injury. MRI was performed using a 1.5 T unit, and the results were assessed by a musculoskeletal radiologist. The findings were compared to those of arthroscopic inspection. A total of 93 shoulders were analyzed. The overall accuracy was 82 %, with values of 79 % for partial tears and 89 % for full-thickness tears. Tears requiring repair demonstrated an accuracy of 88 %. Infraspinatus tears, fatty degeneration of the subscapularis, biceps instability and age were identified as predictive factors for the presence of injury. MRI of the shoulder demonstrated an accuracy of 82 % for the diagnosis of subscapularis tears. The accuracy values for partial and full-thickness tears were 79 and 89 %, respectively. III, development of diagnostic criteria with universally applied reference-nonconsecutive patients.