The extensor digitorum brevis: histological and histochemical aspects

AUTOR(ES)

Jennekens, F. G. I.

RESUMO

Samples of the extensor digitorum brevis muscle (EDB) obtained at necropsy from 26 subjects without known neuromuscular disease were examined histologically and histochemically. In the two youngest subjects, aged 2 months and 8 years, a mosaic distribution of type I and type II fibres was present. From the second decade onwards, increasing with age, the mosaic pattern was gradually replaced by groups of type I and type II fibres and areas of grouped fibre atrophy appeared. It is suggested that these findings may be explained by a slow process of denervation and reinnervation. This process does not seem to occur to the same extent in three other distal limb muscles from which specimens were also examined.

Documentos Relacionados

• Extensor digitorum brevis flap on the treatment of lower limb injuries
• Variation of motor unit size in the human extensor digitorum brevis and thenar muscles1
• Electrophysiological and anatomical estimation of the number of motor units in the monkey extensor digitorum brevis muscle.
• The structure, distribution and innervation of spindles in the extensor digitorum brevis I muscle of the tortoise Testudo graeca.
• Vascularization and anatomical model of the mesotendons of the extensor digitorum and extensor indicis muscles.