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. 2016 Mar-Apr;24(2):94-7.
doi: 10.1590/1413-785220162402149097.

INTRAMUSCULAR MARTIN-GRUBER ANASTOMOSIS

Edie Benedito Caetano  1 , Luiz Ângelo Vieira  1 , Mauricio Ferreira Caetano  1 , Cristina Schmitt Cavalheiro  1 , Mauro Razuk  1 , João José Sabongi  1
Affiliations

INTRAMUSCULAR MARTIN-GRUBER ANASTOMOSIS

Edie Benedito Caetano et al. Acta Ortop Bras. 2016 Mar-Apr.

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.

Conclusion: : 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.

Keywords: Arteriovenous anastomosis; Median nerve; Nervous system malformations; Ulnar nerve.

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Conflict of interest statement

All the authors declare that there is no potential conflict of interest referring to this article.

Figures

Figure 1.
Figure 1.. (A) Median nerve; (B) Ulnar nerve; (C) Intramuscular Martin-Gruber Anastomosis; (D) Flexor digitorum profundus muscle.
Figure 2.
Figure 2.. (A) Median nerve; (B) Ulnar nerve; (C) Intramuscular Martin-Gruber Anastomosis; (D) Flexor digitorum profundus muscle.
Figure 3.
Figure 3.. (A) Median nerve; (B) Ulnar nerve; (C) Intramuscular Martin-Gruber Anastomosis; (D) Flexor digitorum profundus muscle.
Figure 4.
Figure 4.. (A) Median nerve; (B) Ulnar nerve; (C) Intramuscular Martin-Gruber Anastomosis; (D) Flexor digitorum profundus muscle.
Figure 5.
Figure 5.. (A) Median nerve; (B) Ulnar nerve; (C) Intramuscular Martin-Gruber Anastomosis; (D) Flexor digitorum profundus muscle.
See this image and copyright information in PMC

References

    1. Martin R. Tal om Nervus allmanna Egenskaper I Maniskans Kropp. Stockholm: Las Salvius; 1763.
    1. Gruber W. Ueber die Verbindung des Nervus medianus mit dem Nervus ulnaris am Unterame des Menschen um der Saugethiere. Arch Physiol. 1870;37:501–522.
    1. Thomson A. Third Annual Report of Committee of Collective Investigation of Anatomical Society of Great Britain and Ireland for the Year 1891-92. J Anat Physiol. 1893;27(2):183–194. - PMC - PubMed
    1. Kimura J, Murphy MJ, Varda ?DJ. Electrophysiological study of anomalous innervation of intrinsic hand muscles. Arch Neurol. 1976;33(12):842–844. - PubMed
    1. Uchida Y, Sugioka Y. Electrodiagnosis of Martin-Gruber connection and its clinical importance in peripheral nerve surgery. J Hand Surg Am. 1992;17(1):54–59. - PubMed

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