2012
DOI: 10.1097/aap.0b013e318260e458
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Persistent Median Artery (Palmar Type) and Median Nerve Block in the Forearm

Abstract: Anatomical variations of the blood supply to the forearm and hand can be identified with available high-frequency ultrasound equipment. Arterial variants immediately adjacent to the median nerve may occur in approximately 1 in 5 limbs. Practitioners should actively seek their presence or absence.

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Cited by 9 publications
(5 citation statements)
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“…As the main feeding artery of the forearm and hand, the median artery is accompanied by the median nerve passing through the carpal tunnel to the palm. As the embryo develops to the 8th week, the median artery feeding area of most individuals is replaced by the radial and ulnar arteries and gradually degenerates and disappears [2,3] .In only a small number of individuals, the median artery did not degenerate or did not degenerate completely. It was formed when the median nerve entered the carpal tunnel, distributed near the palm or participated in the formation of the super cial palmar arch [1,4] .PMA is an anatomical variation of the upper limb,it is considered as a potential risk factor for carpal tunnel syndrome because it occupies the space of the carpal tunnel and causes thrombosis, compression of the median nerve and formation of median nerve ssure [5,6] .The gold standard for diagnosis of carpal tunnel syndrome has long been accepted as neuroelectrophysiological examination [7,8] .But in recent years, with the rapid development of ultrasound technology, ultrasound has gradually highlighted its unique advantages in the diagnosis of peripheral nerve and vascular diseases.The aim of this study was to examine the persistent median artery using multiple ultrasound imaging techniques and to investigate the diagnostic value of ultrasound in CTS caused by PMA.…”
Section: Introductionmentioning
confidence: 99%
“…As the main feeding artery of the forearm and hand, the median artery is accompanied by the median nerve passing through the carpal tunnel to the palm. As the embryo develops to the 8th week, the median artery feeding area of most individuals is replaced by the radial and ulnar arteries and gradually degenerates and disappears [2,3] .In only a small number of individuals, the median artery did not degenerate or did not degenerate completely. It was formed when the median nerve entered the carpal tunnel, distributed near the palm or participated in the formation of the super cial palmar arch [1,4] .PMA is an anatomical variation of the upper limb,it is considered as a potential risk factor for carpal tunnel syndrome because it occupies the space of the carpal tunnel and causes thrombosis, compression of the median nerve and formation of median nerve ssure [5,6] .The gold standard for diagnosis of carpal tunnel syndrome has long been accepted as neuroelectrophysiological examination [7,8] .But in recent years, with the rapid development of ultrasound technology, ultrasound has gradually highlighted its unique advantages in the diagnosis of peripheral nerve and vascular diseases.The aim of this study was to examine the persistent median artery using multiple ultrasound imaging techniques and to investigate the diagnostic value of ultrasound in CTS caused by PMA.…”
Section: Introductionmentioning
confidence: 99%
“…Es existieren zwei Varianten der PMA, erstens der antebrachiale Typ, welcher üblicherweise im proximalen Unterarmbereich endet und eine Inzidenz von 76 % aufweist und zweitens der im Folgenden betrachtete palmare Typ, der als anatomische Variante gilt. Für den palmaren Typ der PMA existieren in der Literatur unterschiedliche Inzidenzangaben zwischen 1,5 und 27,1 % [5]. Die mittlere Inzidenz beträgt 8 bis 10 % der Bevölkerung und variiert stark innerhalb der Ethnien (2,5 % polnische, 4,3 % britische und 53 % der schwarzen südafrikanischen Bevölkerung) [2].…”
Section: Die Persistierende Arteria Mediana (Pma)unclassified
“…Mit der Hochfrequenzsonographie lässt sich die PMA nach Chen et al auch in vivo zuverlässig nachweisen [28]. Bei einer Kontrollgruppe von 50 Probanden ergab sich nach Stimpson und Gupta dabei eine Prävalenz von 19 % [5]. In einer weiteren Untersuchung von Gassner et al wurde eine PMA mit einer Inzidenz von 25 % uniund 6 % bilateral ermittelt [29].…”
Section: Inzidenz Der Pmaunclassified
“…B. atypische Befunde und Kompressionsursachen wie: ▪ ausgeprägte Synovitiden, ▪ hypertrophe Muskelfasern, ▪ Nervensubluxationen [66], ▪ intraneurale Raumforderungen [68], ▪ eine hohe Aufteilung des N. medianus (▶ Abb. 10), ▪ ein N. medianus bifidus mit symptomatischer oder thrombosierter A. mediana [43,69,74] (▶ Abb. 11), ▪ trifide Nerven [75] (▶ Abb.…”
Section: Kompressionsursachenunclassified