Ulnar Neuropathy Around the Mid-Arm Combined with Martin-Gruber Anastomosis

Kim, Bong Joo; Kim, Dong Hwee

doi:10.5535/arm.2012.36.5.719

Cited by 3 publications

(2 citation statements)

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“…Это приводит к ошибочному назначению консер-вативного лечения вместо оперативного [30]. В данном случае может быть полезно ультразвуковое исследова-ние нервного ствола, позволяющее визуализировать место поражения нерва и оценить степень его пораже-ния [31].…”

Section: анатомия и классификацияunclassified

Martin–gruber Anastomosis and Its Clinical Importance

Михайлюк¹

2015

Klinicist

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MARTIN-GRuBER ANASTOMOSIS AND ITS CLINICAL IMPORTANCE I. G. Mikhaylyuk Department of Nervous System Diseases with Medical Genetics and Neurosurgery, Yaroslavl State Medical University, Ministry of Health of Russia; 5 Revolyutsionnaya St., Yaroslavl, 150000, Russia The communication between the median and ulnar nerves on the forearm, known as the Martin-Gruber anastomosis, is widespread in the general population. Despite the fact that this connection is described by anatomists in XVIII century, its importance has only recently been appreciated because of the widespread of the electrophysiological techniques in clinical practies. However, in the Russian literature aspects of its practical value described so far is not enough. This article deals with the prevalence of the anastomosis, its anatomical and electrophysiological classification, options innervation of muscles of the hand, is carried out through him, described electrophysiological methods and criteria for its diagnosis, including the collision technique, in healthy subjects and patients with lesions of the median and ulnar nerves

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Section: анатомия и классификацияunclassified

Martin–gruber Anastomosis and Its Clinical Importance

Михайлюк¹

2015

Klinicist

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“…The opposite happens with UN stimulation, as the elbow response is smaller because the UN receives crossing fibers in the forearm, resulting in a bigger response at the wrist [ 6 , 17 ]. Hence, MUC might be rarely misinterpreted as a conduction block of the UN between the wrist and below-elbow sites [ 17 , 18 , 19 , 20 ]. Of interest, MUC may lead to interpreting errors during routine nerve conduction studies (NCS) in patients with carpal tunnel syndrome (CTS) [ 5 , 11 , 12 , 21 , 22 ].…”

Section: Introductionmentioning

confidence: 99%

Median-to-Ulnar Nerve Communication in Carpal Tunnel Syndrome: An Electrophysiological Study

Stefano

Gagliardo

Barbone

et al. 2021

Neurology International

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The median-to-ulnar communicating branch (MUC) is an asymptomatic variant of the upper limb innervation that can lead to interpretation errors in routine nerve conduction studies. The diagnosis of carpal tunnel syndrome (CTS) or ulnar nerve lesions can be complicated by the presence of MUC. In this study, we describe electrophysiological features of MUC in CTS patients presenting to our clinic. We enrolled MUB cases from consecutive CTS patients referred to our laboratory between the years 2014 and 2019. MUC was present in 53 limbs (36 patients) from the studied population. MUC was bilateral in 53% of patients. MUC type II was the most common subtype (74%), followed by types III and I; more coexisting MUC types were found in the majority of tested limbs. A positive correlation was demonstrated between the severity of CTS and the presence of positive onset, faster CV, or a double component of the compound muscle action potentials. We emphasize the importance of suspecting the presence of MUC in CTS in the presence of a positive onset or a double component in routine motor conduction studies.

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