Category:
Trauma; Hindfoot
Introduction/Purpose:
The surgical reconstruction of the Achilles tendon has evolved in favor of the use of percutaneous techniques over the traditional approach with wide ...approaches to reduce the complications inherent to this procedure. These percutaneous techniques can present lesions of the sural nerve. The objective of this study is to evaluate the distance of this structure with respect to the instruments used in the Dresden technique.
Methods:
Dissections were made in 16 anatomical pieces (ankles) to which a reproduction of the complete Achilles lesion was previously made and reconstructed using the technique to be studied. After this, the distance of the instrument position with respect to the sural nerve was measured, as well as other relevant measures, and the presence or absence of nerve injury was evaluated.
Results:
None of the pieces there was lesion of the sural nerve neither by direct injury nor by entrapment, in addition, an approximate distance of 10mm of the nerve was found with respect to the entry site of the percutaneous needles as described by the technique. The location of the nerve was always external to the Crural Fascia. We demonstrate a safety area in which the instruments can be used without lesions of the sural nerve.
Conclusion:
The technique described by Amlang with the use of Dresden instruments has a low rate of cutaneous complications and infection compared to the traditional approach for this injury, we find that if the risk of presenting injury is performed properly of the sural nerve is low and its reproduction, for the repair of Achilles injuries, should be considered as the first option over traditional open management.
The highest losses in shrimp farming have been due to viral infections. Among them, the virus of infectious hypodermal and hematopoietic necrosis (IHHNV) affects wild and farmed shrimp at several ...development stages. The disease is considered to have low impact on cultures of Litopenaeus vannamei where it induces a chronic disorder known as the Runt-Deformity Syndrome (RDS). In contrast, the virus of infectious myonecrosis (IMNV) has been associated with mortality rates of up to 60% in shrimp ponds and may affect post-larvae, juveniles and adults. Very little information is available on the impact of IHHN and IMN on wild shrimp from Brazilian coastal waters. The objective of the present study was to assess the susceptibility of native Farfantepenaeus subtilis to these infectious diseases. 300 healthy juvenile shrimp, with an average weight of 2.56g (±0.44g), were accommodated in individual tanks under physical and chemical conditions similar to those of shrimp ponds. The animals were distributed in two groups, A (n=50) and B (n=100), and challenged per os over a period of 3days with IHHNV and IMNV respectively. Control groups received a similar but virus-free diet. The animals were monitored daily for clinical signs or behavior suggestive of viral infection. Biological samples were taken every 5days, over a period of 30days, for molecular and histological analyses in order to determine the susceptibility of the species to the viruses. 10% of the wild F. subtilis studied were PCR-positive in both cases. The results show that the native F. subtilis is susceptible both to IHHNV and IMNV.
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