Innervation of the Pronator Teres Muscle

Alves, Nilton; Cândido, Paulo Laino; Frazão, Renata

doi:10.4067/s0717-95022004000300011

Cited by 8 publications

(8 citation statements)

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“…Beaton and Anson observed this relation in dissected upper limbs and concluded that 82% cases with median nerve between the two heads of pronatoe teres, in 9% ulnar head was absent, in 7% nerve was deep to ulnar head and in 2 % nerve passed through the humeral head [14]. Whereas Alves observed in his study, majority of specimens with the median nerve between the two heads of pronator teres muscle [11]. In the current study on 62 specimens, in 54 specimens median nerve was between the two heads…”

Section: Two 13mentioning

confidence: 39%

“…Out of 24 specimens of pronator teres studied by Chandini Gupta et al, 5 specimens had 1 branch, 12 specimens had 2 branches, 5 specimens had 3 branches and 2 specimens had 4 branches [10]. In a study by Alves, most proximal branch for the pronator teres from median nerve was located 4cm above the interepicondylar line and most distal was 1cm below the line [11]. Bindurani observed the origin of branch to pronator teres was between 1.31±0.58cm proximal to interepicodylar line (range 0.5-3cm) and 1.2±1.27cm distal to the interepicondylar line (0-3.5cm) [7].…”

Section: Two 13mentioning

confidence: 99%

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Innervation Pattern of Pronator Teres Muscle and Its Relation to Median Nerve: A Cadaveric Study

basanagouda¹,

Halagatti²

2017

IJAR

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Section: Two 13mentioning

confidence: 39%

Section: Two 13mentioning

confidence: 99%

Innervation Pattern of Pronator Teres Muscle and Its Relation to Median Nerve: A Cadaveric Study

basanagouda¹,

Halagatti²

2017

IJAR

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“…Two articles were excluded for being case reports, two articles were excluded for being reviews, and one conference abstract was also excluded. One study by Alves, Candido & Frazao (2004) was excluded for data only related to the median nerve and the study by Vincelet et al (2013) was excluded as they presented prevalence data only as a rate per cadaver.…”

Section: Resultsmentioning

confidence: 99%

The prevalence and anatomical characteristics of the accessory head of the flexor pollicis longus muscle: a meta-analysis

Roy

Henry

Pękala

et al. 2015

PeerJ

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Background and Objectives. The accessory head of the flexor pollicis longus muscle (AHFPL), also known as the Gantzer’s muscle, was first described in 1813. The prevalence rates of an AHFPL significantly vary between studies, and no consensus has been reached on the numerous variations reported in its origin, innervation, and relationships to the Anterior Interosseous Nerve (AIN) and the Median Nerve (MN). The aim of our study was to determine the true prevalence of AHFPL and to study its associated anatomical characteristics.Methods. A search of the major electronic databases PubMed, EMBASE, Scopus, ScienceDirect, and Web of Science was performed to identify all articles reporting data on the prevalence of AHPFL in the population. No date or language restriction was set. Additionally, an extensive search of the references of all relevant articles was performed. Data on the prevalence of the AHFPL in upper limbs and its anatomical characteristics and relationships including origin, insertion, innervation, and position was extracted and pooled into a meta-analysis using MetaXL version 2.0.Results. A total of 24 cadaveric studies (n = 2,358 upper limb) were included in the meta-analysis. The pooled prevalence of an AHFPL was 44.2% (95% CI [0.347–0.540]). An AHFPL was found more commonly in men than in women (41.1% vs. 24.1%), and was slightly more prevalent on the right side than on the left side (52.8% vs. 45.2%). The most common origin of the AHFPL was from the medial epicondyle of the humerus with a pooled prevalence of 43.6% (95% CI [0.166–0.521]). In most cases, the AHFPL inserted into the flexor pollicis longus muscle (94.6%, 95% CI [0.731–1.0]) and was innervated by the AIN (97.3%, 95% CI [0.924–0.993]).Conclusion. The AHFPL should be considered as more a part of normal anatomy than an anatomical variant. The variability in its anatomical characteristics, and its potential to cause compression of the AIN and MN, must be taken into account by physicians to avoid iatrogenic injury during decompression procedures and to aid in the diagnosis and treatment of Anterior Interosseous Nerve Syndrome.

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“…Sunderland described 20 cases in which median nerve branches appeared in a segment 7 cm proximal and 2.3 cm distal to the HIL (40 % proximal, 20 % at the HIL and 40 % distal). Alves et al (2004) dissected 18 limbs and identified that 93.3 % of these branches were formed proximally and 6.7 % distal to this landmark. Fuss & Wurzl stated that branching happened in a segment 3.5 cm proximal and 5.5 cm distal to the HIL in 50 dissected limbs, despite not informing the rates of occurrence.…”

Section: Discussionmentioning

confidence: 99%

Anatomical Study of Pronator Teres Muscle Innervation and Clinical Significance in Nerve Transfer

et al. 2018

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CAETANO, E. B.; VIEIRA, L A.; SABONGI NETO, J. J. ; CAETANO, M. B. F.; SABONGI, R. G.; MARTINEZ, L.; OGATA, K. K. & BONI, E. B. S. Anatomical study of pronator teres muscle innervation and clinical significance in nerve transfer. Int. J. Morphol., 36(4):1500Morphol., 36(4): -1508Morphol., 36(4): , 2018. SUMMARY:The anatomical relationship of the median nerve and its innervation pattern are variable and may have direct implications in surgical procedures such as distal nerve transfers. The objective of this study was to evaluate the anatomical variations of pronator teres muscle (PTM) innervation and its clinical significance in nerve transfers. Data were collected regarding the number of median nerve branches, site of their origin, contribution with branches of other muscles and the possibility of transferring expendable branches of PTM to the anterior interosseous nerve (AIN) and radial nerve. The most common origin of the branches was proximal to the humeral intercondylar line. The presence of only one PTM branch was identified in 9 limbs, in which 6 was exclusive for this muscle. The majority of specimens presented more than one branch to the PTM, with two branches in 19, although only 6 of these did not share branches with other muscles. The proximal branch of the PTM was long enough to be transferred to the AIN in 23 limbs and branches of the radial nerve in all. These transfers were possible even during the forearm prone-supination and flexion-extension of the elbow. The use of the PTM branch may be considered for transfers in C7-T1 root injuries of the brachial plexus, with care regarding the availability of multiple PTM branches and tension to the AIN and radial nerve branches. E. B.; VIEIRA, L A.; SABONGI NETO, J. J.; CAETANO, M. B. F.; SABONGI, R. G.; MARTINEZ, L.; OGATA, K. K. & BONI, E. B. S. Anatomical study of pronator teres muscle innervation and clinical significance in nerve transfer. Int. J. Morphol., 36(4):1500Morphol., 36(4): -1508Morphol., 36(4): , 2018 CAETANO,

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Innervation of the Pronator Teres Muscle

Cited by 8 publications

References 10 publications

Innervation Pattern of Pronator Teres Muscle and Its Relation to Median Nerve: A Cadaveric Study

Innervation Pattern of Pronator Teres Muscle and Its Relation to Median Nerve: A Cadaveric Study

The prevalence and anatomical characteristics of the accessory head of the flexor pollicis longus muscle: a meta-analysis

Anatomical Study of Pronator Teres Muscle Innervation and Clinical Significance in Nerve Transfer

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