title: INTRAMUSCULAR MARTIN-GRUBER ANASTOMOSIS.
abstract: OBJECTIVE
  : This paper reports the incidence, origin, course and anatomical relationships of intramuscular Martin-Gruber anastomosis.
  
  
  METHODS
  : Anatomical dissection of 100 limbs from 50 adults cadavers was performed. The intramuscular Martin-Gruber anastomosis was found in five forearms, three in the right and two in the left side, one was bilateral. All communication were located between the anterior interosseous nerve and the ulnar nerve.
  
  
  CONCLUSIONS
  : The purpose of intramuscular Martin-Gruber anastomosis, which we found in 5% of dissected limbs, is to supply the flexor digitorum profundus muscle and it is unlikely to have any influence on the innervation of the intrinsic muscles of the hand. Level of Evidence IV, Cases Series.
authors.affiliation: . Pontifícia Universidade Católica de São Paulo, Faculdade de Ciências Médicas e da Saúde, Campus Sorocaba, Sorocaba, SP, Brazil.
authors.forename: Edie Benedito
authors.initials: EB
authors.lastname: Caetano
authors.affiliation: . Pontifícia Universidade Católica de São Paulo, Faculdade de Ciências Médicas e da Saúde, Campus Sorocaba, Sorocaba, SP, Brazil.
authors.forename: Luiz Ângelo
authors.initials: LÂ
authors.lastname: Vieira
authors.affiliation: . Pontifícia Universidade Católica de São Paulo, Faculdade de Ciências Médicas e da Saúde, Campus Sorocaba, Sorocaba, SP, Brazil.
authors.forename: Mauricio Ferreira
authors.initials: MF
authors.lastname: Caetano
authors.affiliation: . Pontifícia Universidade Católica de São Paulo, Faculdade de Ciências Médicas e da Saúde, Campus Sorocaba, Sorocaba, SP, Brazil.
authors.forename: Cristina Schmitt
authors.initials: CS
authors.lastname: Cavalheiro
authors.affiliation: . Pontifícia Universidade Católica de São Paulo, Faculdade de Ciências Médicas e da Saúde, Campus Sorocaba, Sorocaba, SP, Brazil.
authors.forename: Mauro
authors.initials: M
authors.lastname: Razuk
authors.affiliation: . Pontifícia Universidade Católica de São Paulo, Faculdade de Ciências Médicas e da Saúde, Campus Sorocaba, Sorocaba, SP, Brazil.
authors.forename: João José
authors.initials: JJ
authors.lastname: Sabongi
keywords: Arteriovenous anastomosis; Median nerve; Nervous system malformations; Ulnar nerve