The Martin-Gruber anastomosis in Brazilians: an anatomical study

Comunications between nerves are relatively common, and individual variations in their anatomical organization have been described. Knowledge of the prevalence of such variations is necessary when establishing the diagnosis of both sexes, were dissected to examine the communication between the median and ulnar nerves (Martin-Gruber anastomosis). This anastomosis was found in five cases (7.8 por cento) one of which was bilateral. There were no significant gender or racial differences in the incidence of this connection. The anastomosis showed secondary branches in two cases, and ran posteriorly to the ulnar artery in three cases, and advanced anteriorly to the flexor digitorum profundus muscles in all cases. Despite the low incidence of Martin-Gruber anastomosis in Brazilians observed here, the importance of an adequate investigation of these connections needs to be underscored. Understanding the existence of this variation, its location and its possible presentation is important for correct patient assistance.

The Martin-Gruber anastomosis in brazilians: an anatomical study

Communications between nerves are relatively common, and individual variations in their anatomical organization have been described. Knowledge of the prevalence of such variations is necessary when estabilishing the diagnosis of neuropathies and surgical landmarks. In this study, 64 anterior forearm regions of cadavers of blacks and whites of both sexes, were dissected to examine the communications between the median and ulnar nerves (Martin-Gruber anastomosis). This anastomosis was found in five cases (7,8%), one of which was bilateral. There were no significant gender or racial differences in the incidence of this connection. The anastomosis in Brazilians observed here, the impoprtance of an adequate investigation of these connections needs to be underscored. Understanding the existence of this variations, its location and its possible presentation is important for correct patient assistance.

Exposiçäo ao formaldeído em anatomia: um risco de saúde ocupacional? / Exposure to folmaldehyde in anatomy: an occupational health hazard?

Sao discutidos os efeitos prejudiciais do formaldeído, baseados em resultados de pesquisas científicas que sao principalmente publicados em revistas nao usualmente lidas por anatomistas. O objetivo do presente artigo é fazer uma súmula dos reais perigos dessa substância para a saúde. Suas propriedades e origem sao sucintamente mencionadas, seus efeitos tóxicos sao descritos e sao feitas recomendaçoes para minimizar as conseqüências do seu uso. Esses dados certamente ajudarao os anatomistas a discutirem com mais precisao o potencial de risco do formaldeído, para a saúde.

Consideraçöes as estruturas anatômicas relacionadas a manutençäo do nervo ulnar ao nível da regiäo posterior do cotovelo / Considerations about the anatomical structures related to the ulnar nerve maintenance at the level of the posterior region of the elbow

Os estudos sobre a luxaçäo do nervo ulnar do cotovelo demonstram a necessidade de um maior conhecimento em relaçäo aos aspectos anatômicos desta regiäo. Com esse objetivo, estudou-se os meios de manutençäo do nervo ulnar na goteira epitrócleo-olecraniana em 50 membros superiores formolizados e a profundidade do sulco ulnar em 100 úmeros macerados de indivíduos adultos. Conclui-se que o nervo é mantido em seu leito pelo ligamento epitrócleo-oclaniano, pela aponeurose do músculo flexor ulnar do carpo e espessamento da fáscia muscular superficial e que a profundidade do sulco é razoavelmente capaz de alojar o nervo ulnar em seu leito, em condiçöes normais