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A Martin-Gruber anastomosis (MGA) is a connection from the median nerve to the ulnar nerve in the forearm. An anastomosis occurs when two structures that normally are not connected have a connection. In this case the connection is a nerve. The Martin-Gruber anastomosis is most common anastomosis that occurs between these two nerves. This connection carries motor axons which innervate some of the usually ulnar nerve innervated intrinsic muscles.

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  • Eine Martin-Gruber-Anastomose ist eine Verbindung aus Nervenfasern zwischen dem Nervus medianus (N. medianus) und dem Nervus ulnaris (N. ulnaris) am Unterarm. Diese anatomische Normvariante ist sehr häufig, ihre Prävalenz wird in der Literatur zwischen 6 und 47 % angegeben. (de)
  • A Martin-Gruber anastomosis (MGA) is a connection from the median nerve to the ulnar nerve in the forearm. An anastomosis occurs when two structures that normally are not connected have a connection. In this case the connection is a nerve. The Martin-Gruber anastomosis is most common anastomosis that occurs between these two nerves. This connection carries motor axons which innervate some of the usually ulnar nerve innervated intrinsic muscles. This inconstant pattern of connection can serve as explanation for a difficult or challenging differential diagnosis. In one study, the MGA was found in 22.9% of cadaver specimens, while another found the incidence at ~11%. This relatively high incidence demonstrates the necessity for healthcare specialists to factor the MGA into their diagnoses. (en)
  • Anastomoza Grubera-Martina (ang. Martin-Gruber Anastomosis – MGA) – anomalia anatomiczna kończyny górnej, polegająca na istnieniu zespolenia między nerwem łokciowym i pośrodkowym. W obszarze części włókien nerwu pośrodkowego łączy się z nerwem łokciowym i unerwia część kłębu bez przechodzenia przez kanał nadgarstka. (pl)
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  • Eine Martin-Gruber-Anastomose ist eine Verbindung aus Nervenfasern zwischen dem Nervus medianus (N. medianus) und dem Nervus ulnaris (N. ulnaris) am Unterarm. Diese anatomische Normvariante ist sehr häufig, ihre Prävalenz wird in der Literatur zwischen 6 und 47 % angegeben. (de)
  • Anastomoza Grubera-Martina (ang. Martin-Gruber Anastomosis – MGA) – anomalia anatomiczna kończyny górnej, polegająca na istnieniu zespolenia między nerwem łokciowym i pośrodkowym. W obszarze części włókien nerwu pośrodkowego łączy się z nerwem łokciowym i unerwia część kłębu bez przechodzenia przez kanał nadgarstka. (pl)
  • A Martin-Gruber anastomosis (MGA) is a connection from the median nerve to the ulnar nerve in the forearm. An anastomosis occurs when two structures that normally are not connected have a connection. In this case the connection is a nerve. The Martin-Gruber anastomosis is most common anastomosis that occurs between these two nerves. This connection carries motor axons which innervate some of the usually ulnar nerve innervated intrinsic muscles. (en)
rdfs:label
  • Martin-Gruber-Anastomose (de)
  • Martin-Gruber Anastomosis (en)
  • Anastomoza Grubera-Martina (pl)
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