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In commemoration of one hundred years of the beginning of World War I, the occurrence of an outbreak of trichinosis in the crew of the SMS Dresden, a German ship that participated in that world conflagration, is re-viewed. In September 1915, while the sailors of SMS Dresden were forcibly detained on Isla Quiriquina, Bío Bío Region, Chile, 60 individuals became ill. The cause of the outbreak was the consumption of sausages made from pork infected with the parasite Trichinella spiralis. There was a fatal case. The review of the epidemiological aspects that facilitated the presentation and spread of human trichinosis at that time allows to conclude that, pork breeded in poor hygienic conditions, meat and its by-products clandestinely sold without sanitary inspection and the language barrier were determinant in the occurrence of the epidemic outbreak.

A propósito de la conmemoración de los cien años del inicio de la Primera Guerra Mundial, se revisa la ocurrencia de un brote epidémico de triquinosis en tripulantes del SMS Dresden, buque alemán que participó en esa conflagración mundial. Este suceso, acaecido en septiembre de 1915, ocurrió mientras los marinos se encontraban forzosamente recluidos en la Isla Quiriquina, Región del Bío Bío, Chile. La causa del brote fue el consumo de embutidos fabricados a partir de carne de cerdo infectada con el parásito Trichinella spiralis e involucró a 60 mari-neros, de los cuales hubo un caso fatal. La revisión de los aspectos epidemiológicos que favorecían la presentación de triquinosis humana en la época permite concluir que, la crianza porcina en malas condiciones higiénicas, la venta clandestina de carnes y subproductos sin inspección sanitaria y la barrera idiomática fueron determinantes en la ocurrencia del brote epidémico.

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Introducción: Las roturas del tendón de Aquiles son lesiones traumáticas frecuentes. El tratamiento generalmente es quirúrgico. La cirugía puede ser abierta o percutánea. El objetivo de este estudio es evaluar los resultados clínico-funcionales en pacientes con roturas agudas del tendón de Aquiles tratados por técnica mínimamente invasiva de Dresden. Materiales y Métodos: Estudio prospectivo comparativo de 15 casos con roturas agudas del tendón de Aquiles. Se analizaron características del intraoperatorio, la hospitalización, los resultados funcionales y la evaluación de acuerdo con el puntaje de la AOFAS. El seguimiento promedio fue de 18 meses. Resultados: Se mencionan los resultados sobre la base del tiempo quirúrgico, la estadía hospitalaria, el tiempo hasta la cirugía, la carga del peso y el protocolo posoperatorio. El puntaje de la AOFAS a los 5 meses fue 94,66. El retorno a la actividad laboral fue, en promedio, a los 3.53 meses y el retorno a la actividad deportiva, a los 6.53 meses. Conclusiones: La técnica percutánea para la reparación de roturas agudas del tendón de Aquiles es una buena opción, los pacientes tienen una buena evolución y el índice de complicaciones es bajo. Nivel de Evidencia: IV

Introduction: The Achilles tendon ruptures are common traumatic injuries. Treatment is usually surgical. Surgery may be open or percutaneous. The aim of this study is to evaluate the clinical and functional outcomes in patients with acute Achilles ruptures treated by minimally invasive Dresden technique. Methods: Prospective study of 15 patients with acute Achilles tendon ruptures. Intraoperative characteristics, hospitalization, functional outcomes and evaluation according to AOFAS score were evaluated. The average follow-up was 18 months. Results: Results are listed based on the surgical time, hospital stay, time to surgery, weight load and postoperative protocol. The AOFAS score at five months was 94.66 points. Patients returned to work at 3.53 months on average and to their sport activities at 6.53 months Conclusions: The percutaneous technique for the repair of acute Achilles tendon rupture is a good choice. Patients have a good outcome and the rate of complications is low. Level of Evidence: IV

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PURPOSE: The purpose of this study was to describe the angle of clinical failure during cyclical mobilization exercises in the Achilles tendon of human cadaveric specimens that were repaired using the Dresden technique and FiberWire® No. 2. The secondary aim was to identify the secure limit of mobilization, the type of failure, and the type of apposition. METHODS: The lower limbs of eight males (mean age: 60.3 ± 6.3 years) were repaired with the Dresden technique following complete, percutaneous mid-substance Achilles tendon rupture. A basal tension of 10 N at 30° of plantarflexion was placed on each specimen. The angle of the ankle during clinical failure (tendon ends separation >5 mm) was then tested via cyclical exercises (i.e. 100 cycles between 30° and 15° of plantarflexion; 100 cycles between 15° of plantarflexion and 0°; 100 cycles between 0° and 15° of dorsiflexion; and 100 cycles between 15° of dorsiflexion and full dorsiflexion). Clinical failure was determined using the Laplacian edge detection filter, and the angle of clinical failure was obtained using a rotatory potentiometer aligned in relation to the intermalleolar axis of each foot specimen. The type of failure (knot, tendon, or suture) and apposition (termino-terminal or non-termino-terminal) were determined. Descriptive statistics were used to obtain the mean; standard deviation; 95 % confidence interval; 1st, 25th, 50th, 75th, and 100th percentiles; and the standard error of the mean for angle data. Proportions were used to describe the type of failure and apposition. RESULTS: The main results were a mean angle of clinical failure equal to 12.5° of plantarflexion, a limit of mobilization equal to 14.0° of plantarflexion, tendon failure type, and non-termino-terminal apposition in all specimens. CONCLUSIONS: While the mean angle of clinical failure in human cadaveric models was 12.5° of plantarflexion, after 14.0° of plantarflexion, the percutaneous Dresden technique was found insecure for cyclical mobilization exercises, with a 5 % range of error. These findings are clinically relevant as they provide mechanical limits for diminishing the risk of Achilles lengthening during immediate rehabilitation.

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