Reverse Shoulder Arthroplasty: Evaluation of the Clinical and Functional Outcomes per Etiology / Artroplastia reversa de ombro: Avaliação dos resultados clínicos e funcionais de acordo com a etiologia

Abstract Objective The present study aimed to evaluate the clinical outcomes of reverse shoulder arthroplasty to treat several conditions. Methods Retrospective, longitudinal study analyzing the Constant and University of California at Los Angeles (UCLA) scores and range of motion of patients undergoing reverse shoulder arthroplasty. Results In total, 28 patients were analyzed, with a mean age of 75.6 years old. The mean duration of follow-up was 45 months. Overall, there was a significant variation (p< 0.0001) between the preoperative (10.2 points) and the postoperative UCLA scores (29.6 points), corresponding to a relative increase of approximately 200%. In addition, the mean Constant score was 67.8, and the complication rate was 17.8%. As for functional outcomes per etiology, fracture sequelae cases presented the best mean elevation (165°), Constant score (79 points), postoperative UCLA score (32.5 points), and absolute delta UCLA score increase (22 points), but with no statistical significance. However, cases operated for fracture sequelae showed significantly higher elevation (p= 0.027) and Constant score (p= 0.047) compared to rotator cuff arthropathy cases. In addition, the lowest mean postoperative Constant and UCLA scores were observed for the following etiologies: primary arthrosis, acute fracture, and arthroplasty revision. Conclusion Reverse shoulder arthroplasty showed satisfactory functional outcomes and may be a treatment option not only for rotator cuff arthropathy but for several other conditions.

Resumo Objetivo Avaliar os resultados clínicos da artroplastia reversa do ombro no tratamento de suas diversas indicações. Métodos Estudo longitudinal retrospectivo que analisou os resultados dos escores Constant, UCLA e amplitudes de movimentos dos pacientes submetidos à artroplastia reversa do ombro. Resultados Foram analisados 28 pacientes, a média de idade foi de 75.6 anos, com seguimento médio de 45 meses. No geral, obtivemos uma variação significativa (p< 0,0001) entre o escore UCLA pré-operatório (10,2 pontos) e o escore UCLA pós-operatório (29,6 pontos), o que corresponde a um aumento relativo de aproximadamente 200%. Além disso, obtivemos pontuação média do escore Constant de 67,8 e uma taxa de complicações de 17,8%. Quanto aos resultados funcionais segundo as indicações, os casos de sequela de fratura apresentaram as melhores médias de elevação (165°), escore Constant (79 pontos), escore UCLA pós-operatório (32,5 pontos) e aumento absoluto na variação do escore UCLA (22 pontos), sem significância estatística. Porém, identificou-se que os casos operados por sequela de fratura apresentaram elevação (p= 0,027) e pontuação no escore Constant (p= 0,047) significativamente maiores em relação aos casos de artropatia do manguito rotador. Além disso, observamos que as menores médias dos escores Constant e UCLA pós-operatórios foram obtidos nas seguintes etiologias: artrose primária, fratura aguda e revisão de artroplastia. Conclusão A artroplastia reversa de ombro apresentou resultados funcionais satisfatórios, podendo ser uma opção de tratamento não somente nos casos de artropatia do manguito rotador, mas também em várias outras patologias.

Arthroscopic Repair of Rotator Cuff Injury: An Analysis of Function, Muscular Strength and Pain Between Single Row and Double Row Techniques / Reparo artroscópico da lesão de manguito rotador: Uma análise da função, força muscular e dor entre técnicas de fileira simples e fileira dupla

Abstract Objective To evaluate the patients submitted to arthroscopic repair of the rotator cuff (RC), comparing the functional results, muscle strength, and pain obtained after single row (SR) and double row (DR) techniques. Methods Data were collected at the postoperative follow-up (minimum of 12 months) of 128 patients submitted to arthroscopic RC repair from 2011 to 2018. The clinical-functional variables were collected through the clinical examination, and the demographic, surgical and injury variables of the RC were collected from the electronic medical records. The results were compared between the SR and DR groups. Results The DR group showed higher anterior elevation strength when compared with the SR group (SF: 4.72 ± 2.73 kg versus DR: 5.90 ± 2.73 kg; p = 0.017). The other variables of muscle strength, Constant-Murley Score, University of California at Los Angeles Shoulder Rating Scale (UCLA), and pain, were similar. Performing the stratification by size, in the analysis of small and medium injuries, no differences were found between the groups. However, in the analysis of large and extensive injuries, patients submitted to DR presented superiority of both muscle lifting strength (SF: 3.98 ± 2.24 kg versus DR: 6.39 ± 2.73 kg) and Constant score (SF: 81 ± 10 versus DR: 88 ± 7). Conclusion The use of the DR technique in arthroscopic RC repair allowed higher levels of muscle strength for anterior shoulder elevation when compared with the SF technique. Data stratification in large and extensive injuries showed superiority of anterior shoulder elevation muscle strength and of the Constant score in patients submitted to DR.

Resumo Objetivo Avaliar os pacientes submetidos ao reparo artroscópico do manguito rotador (MR), comparando-se os resultados funcionais, força muscular e dor obtidos após as técnicas de fileira simples (FS) e de fileira dupla (FD). Métodos Foram coletados os dados do seguimento pós-operatório (mínimo de 12 meses) de 128 pacientes submetidos ao reparo artroscópico do MR durante o período de 2011 a 2018. As variáveis clínico-funcionais foram coletadas por meio do exame clínico, e as variáveis demográficas, cirúrgicas e das lesões do MR a partir dos prontuários eletrônicos. Os resultados foram comparados entre os grupos FS e FD. Resultados O grupo FD demonstrou força de elevação anterior maior quando comparado ao grupo FS (FS: 4,72 ± 2,73 kg versus FD:5,90 ± 2,73 kg; p = 0,017). As demais variáveis de força muscular, Constant-Murley Score, University of California at Los Angeles Shoulder Rating Scale (UCLA, na sigla em inglês) e dor foram similares. Realizando-se a estratificação por tamanho, na análise das lesões pequenas e médias, não foram encontradas diferenças entre os grupos. Porém, na análise das lesões grandes e extensas, os pacientes submetidos à FD apresentaram superioridade tanto na força muscular de elevação (FS: 3,98 ± 2,24 kg versus FD: 6,39 ± 2,73 kg) quanto no escore Constant (FS: 81 ± 10 versus FD: 88 ± 7). Conclusão A utilização da técnica de FD no reparo artroscópico do MR possibilitou maiores níveis de força muscular para elevação anterior do ombro quando comparada à técnica de FS. A estratificação dos dados em lesões grandes e extensas evidenciou superioridade da força muscular de elevação anterior do ombro e do escore Constant nos pacientes submetidos à FD.

Does CO2 pneumoperitoneum in laparoscopy interfere with collagen deposition in abdominal surgical wounds?

Abstract Purpose To determine by histomorphometric analysis whether CO2 pneumoperitoneum interferes with collagen deposition in surgical wounds in the aponeurosis of rats. Methods This experiment involved 80 male Wistar rats, randomly allocated into four groups according to pneumoperitoneum period (PRE: 30 min preoperatively; POST: 30 min postoperatively; PP: 30 min pre- and postoperatively; C: control group). CO2 pneumoperitoneum was insufflated to 5 mmHg of pressure. A laparotomy was performed; 1 cm of the left colon was then resected, and an end-to-end anastomosis was performed to simulate surgical trauma, after which the abdominal wall was closed. On postoperative days 7 or 14, a sample of the abdominal wall was collected, stained with picrosirius red and observed under polarized light in an optical microscope. The amount of collagen was estimated by computerized histomorphometric analysis. Results There were no significant differences in collagen deposition between the control and experimental groups on postoperative days 7 (p=0.720) or 14 (p=0.933). The amount of collagen increased as expected in all groups between postoperative days 7 and 14 (p=0.0003). Conclusion At 5 mmHg, CO2 pneumoperitoneum does not interfere with collagen deposition in abdominal wall surgical wounds in rats.