Objective: To report surgical techniques and results in the treatment of chronic Monteggia fracture-dislocation in children. Methods: Six pediatric patients who had undergone a procedure involving the following 6 crucial surgical steps were retrospectively evaluated: 1- extended lateral approach, 2- fibrotic removal, 3-proximal ulnar osteotomy, 4- reduction of the radial head and transcapitellar temporary fixation, 5- ulnar fixation with a straight plate shaped according to the deformity generated by temporary fixation, and 6- transcapitellar Kirschner wire removal. Results: Four patients were women, and four showed the right-sided compromise. The mean age of patients was 8 years, and the minimum follow-up period was 12 months. The mean time from the onset of fracture to treatment was 6 months. Six patients underwent complete flexo/extension, and one patient had a complete prono-supination. In four patients, we observed loss of pronation (by 10° in two, 15° in one, and 20° in one), and one patient had a 15° decrease in supination. We did not observe any redislocation of the radial head in the follow-up evaluation. No complications were observed; the only complaint was salience of the ulnar plate. Conclusions: Our results demonstrated an effective option for the treatment of chronic Monteggia fracture-dislocation in children, even with a small study sample, following the presented technical and surgical strategies. Level of evidence IV, Therapeutic Studies.

Objetivo Construir um protótipo virtual de um dispositivo de fixação circular externa para fraturas em ossos longos com dinamização controlada a partir de dois materiais diferentes e prever seu comportamento mecânico por meio da análise de elementos finitos AEF). Método Modelos tridimensionais compostos de duas peças metálicas unidas por uma junta deslizante em rabo de andorinha e um amortecedor de silicone de alta densidade foram criados em um software. Análises de elementos finitos distintas foram simuladas considerando dois materiais (aço inoxidável ou titânio), modos (bloqueado ou dinamizado) e condições de carregamento (estático/pontual ou dinâmico/0,5 segundo) diferentes com carga axial uniforme de 150 kg na porção superior do dispositivo. Resultados O modelo de elementos finitos (EFs) apresentou 81.872 nós e 45.922 elementos. Com aço inoxidável, o pico de tensão máxima (140,98 MPa) foi alcançado com o dispositivo bloqueado e sob carga estática, enquanto o maior deslocamento (2.415 × 10⁻³ mm) foi obtido com o dispositivo bloqueado e sob carga dinâmica. Com titânio, o pico de tensão máxima (141,45 MPa) ocorreu com o dispositivo bloqueado e sob carga estática, enquanto o maior deslocamento (3.975 × 10⁻³ mm) foi observado com o dispositivo bloqueado e sob carga dinâmica. Conclusão O protótipo do dispositivo desempenhou o papel de suporte de tensão com deformação aceitável nos dois modos, bloqueado ou dinamizado, e pode ser fabricado com aço inoxidável ou titânio. Received: 31 January 2020 Accepted: 17 September 2020 Publication Date: 19 February 2021 (online) © 2021. Sociedade Brasileira de Ortopedia e Traumatologia. This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/) Thieme Revinter Publicações Ltda. Rua do Matoso 170, Rio de Janeiro, RJ, CEP 20270-135, Brazil

Objetivo: Avaliar os resultados do tratamento artroscópico da epicondilite lateral. Métodos: Foram avaliados 14 pacientes (15 cotovelos) submetidos ao tratamento artroscópico da epicondilite lateral refratária ao tratamento conservador, o qual foi feito por um período mínimo de 18 meses. Além da coleta de dados demográficos, os pacientes foram avaliados segundo a classificação artroscópica de Baker et al., o questionário Disabilities of the Arm, Shoulder, and Hand (DASH) e o Mayo Elbow Performance Score (MEPS). As idades dos pacientes variaram entre 23 e 56 anos (média de 46) e foram oito do sexo masculino e seis do feminino. Dos 15 cotovelos, 12 eram do membro dominante e um paciente tinha lesão bilateral. O seguimento após a cirurgia foi de no mínimo 24 meses e no máximo 72 meses (média de 41). Resultados: Foram constatadas, segundo a classificação artroscópica de Baker et al., dois pacientes com lesão do tipo I, nove com lesão do tipo II e três com lesão do tipo III. Encontramos as seguintes complicações: um paciente com alteração da sensibilidade na região do portal lateral, um com déficit de dez graus na extensão, um com plica sinovial e um com sinovite em compartimento lateral. Nossa pontuação no questionário DASH foi de no mínimo 32 pontos e no máximo 120 pontos (média de 57) e a escala de MEPS apresentou pontuação mínima de 60 pontos e máxima de 100 pontos (média de 90 pontos). Conclusão: O tratamento artroscópico da epicondilite lateral, além de seguro, apresenta resultados satisfatórios. Objective: Evaluate the results of the arthroscopic treatment of the lateral epicondylitis. Methods: We evaluated 14 patients (15 elbows) submitted to the arthroscopic treatment of the lateral epicondylitis refractory to the conservative treatment, wich was realized for a minimum period of 18 months. Beyond the demographic data collection, patients were evaluated according to the arthroscopic classification of Baker et al., the Disabilities of the Arm, Shoulder, and Hand (DASH) questionnaire and the Mayo Elbow Performance Score (MEPS). The patients’ ages ranged between 23 and 56 years (average 46 years), eight male and six female. Of the 15 elbows, 12 were the dominant and one patient had bilateral lesion. The follow-up after surgery was minimum 24 months and maximum 72 months (average 41 months). Results: We found, according to the arthroscopic classification of Baker et al., two patients with type I lesions, nine with type II lesions and three with type III lesions. We found the following complications: one pacient with altered sensitivity in the region of the lateral portal, one with a deficit of ten degrees in length, one with synovial plica and one with synovitis in the lateral compartment. Our score on the DASH questionnaire was minimum of 32 points and maximum of 120 points (average 57 points) and the scale of MEPS had a minimum score of 60 points and a maximum of 100 points (average 90 points). Conclusion: The arthroscopic treatment of the lateral epicondylitis, plus insurance, provides satisfactory results.

Intramedullary nails (IMNs) are the most frequent surgical fixation method for femur fractures. Although IMNs provide good healing outcomes and low complication rates, concerns persist regarding potential complications such as malunion, nonunion, and infections. This multicenter retrospective study aims to assess the epidemiology and outcomes of IMNs for diaphyseal femoral fractures. Data from 91 patients who underwent IMN fixation at two Brazilian hospitals between 2020 and 2024 were analyzed, with a mean age of 33.3 years (SD ± 12.7) and 76.9%% of male patients. Traffic accidents were the most common mechanism of trauma (84.61%). The bone healing rate was 96.7% within six months, and 98.9% within one year, with a complication rate of 3.26%, including two cases of pseudoarthrosis, one case of pseudoarthrosis and infection, and two reoperations. There was a significant association between previous external fixation and fracture type (open/closed) (χ²(1) = 17.5, p_Fischer < 0.001). Previous external fixation was also associated with lower consolidation rates six months post-surgery (χ²(1) = 9.83, p_Fischer = 0.031), but not after one year (χ²(1) = 8.19, p_Fischer = 0.11). The retrograde approach was associated with a lower consolidation rate after six months (χ²(1) = 6.98, p_Fischer = 0.027), but no significant association was found after one year (χ²(1) = 2.27, p_Fischer = 0.308). Only one patient with pseudoarthrosis did not consolidate after one year. The outcomes support the efficacy of IMNs in achieving bone consolidation with low complication rates.

Objective: to evaluate the results of the arthroscopic treatment of the lateral epicondylitis. Methods: we evaluated 14 patients (15 elbows) submitted to the arthroscopic treatment of the lateral epicondylitis refractory to the conservative treatment, which was realized for a minimum period of 18 months. Beyond the demographic data collection, patients were evaluated according to the arthroscopic classification of Baker et al., the Disabilities of the Arm, Shoulder, and Hand (DASH) questionnaire and the Mayo Elbow Performance Score (MEPS). The patients’ ages ranged between 23 and 56 years (average 46 years) (eight males and six females). Of the 15 elbows, 12 were the dominant and one patient had bilateral lesion. The follow-up after surgery was minimum 24 months and maximum 72 months (average 41 months). Results: we found, according to the arthroscopic classification of Baker et al., two patients with type I lesions, nine with type II lesions and three with type III lesions. We found the following complications: one patient with altered sensitivity in the region of the lateral portal, one with a deficit of ten degrees in length, one with synovial plica and one with synovitis in the lateral compartment. Our score on the DASH questionnaire was minimum of 32 points and maximum of 120 points (average 57 points) and the scale of MEPS had a minimum score of 60 points and a maximum of 100 points (average 90 points). Conclusion: the arthroscopic treatment of the lateral epicondylitis, plus insurance, provides satisfactory results. Objetivo: avaliar os resultados do tratamento artroscópico da epicondilite lateral. Métodos: foram avaliados 14 pacientes (15 cotovelos) submetidos ao tratamento artroscópico da epicondilite lateral refratária ao tratamento conservador, o qual foi feito por um período mínimo de 18 meses. Além da coleta de dados demográficos, os pacientes foram avaliados segundo a classificação artroscópica de Baker et al., o questionário Disabilities of the Arm, Shoulder, and Hand (DASH) e o Mayo Elbow Performance Score (MEPS). As idades dos pacientes variaram entre 23 e 56 anos (média de 46) e foram oito do sexo masculino e seis do feminino. Dos 15 cotovelos, 12 eram do membro dominante e um paciente tinha lesão bilateral. O seguimento após a cirurgia foi de no mínimo 24 meses e no máximo 72 meses (média de 41). Resultados: foram constatadas, segundo a classificação artroscópica de Baker et al., dois pacientes com lesão do tipo I, nove com lesão do tipo II e três com lesão do tipo III. Encontramos as seguintes complicações: um paciente com alteração da sensibilidade na região do portal lateral, um com déficit de dez graus na extensão, um com plica sinovial e um com sinovite em compartimento lateral. Nossa pontuação no questionário DASH foi de no mínimo 32 pontos e no máximo 120 pontos (média de 57) e a escala de MEPS apresentou pontuação mínima de 60 pontos e máxima de 100 pontos (média de 90 pontos). Conclusão: o tratamento artroscópico da epicondilite lateral, além de seguro, apresenta resultados satisfatórios.