Accessory muscle in the hypothenar region: A functional approach

Bakinde, N.; Yotovski, Peter; Voigt, Tilman; Rager, Günter

doi:10.1016/j.aanat.2004.10.002

Cited by 17 publications

(11 citation statements)

References 10 publications

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“…This muscle inserted about 1 cm proximal to the insertion of abductor digiti minimi muscle and also received fibers from this muscle. [4] De Smet studied the median and ulnar nerve compressions at the wrist region caused by anomalous muscles. According to the author, the variations of palmaris longus, abductor digiti minimi group and flexor carpi ulnaris may cause idiopathic ulnar tunnel syndrome.…”

Section: Discussionmentioning

confidence: 99%

“…These include fusion, absence or multiplication type of variations frequently. [2][3][4] Some of these hypothenar muscle variations may cause ulnar nerve compression syndromes and therefore have a great clinical importance for the clinicians. [5][6][7] In this case, we report an extremely rare variation of one of the muscles of hypothenar region and rename it according to its anatomical localization.…”

Section: Introductionmentioning

confidence: 99%

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An accessory flexor digiti minimi brevis or flexor digiti minimi longus?

Beşer¹,

Sargon²,

Erçakmak³

2015

Anatomy

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During routine gross anatomical dissection of the right forearm and hand region of a 61 year old male cadaver, an unusual muscle originating from the tendon of palmaris longus muscle was observed. This muscle originated 3.1 cm proximal to the proximal end of flexor retinaculum and coursed superficial to the retinaculum to reach the hypothenar region. In the hypothenar region, 5.2 cm distal to the proximal end of flexor retinaculum, the muscle fibers became tendinous and this tendon was inserted to the medial side of the base of fifth proximal phalanx. In this cadaver, muscle fibers of flexor digiti minimi brevis was also inserted to the medial side of this variant tendon in a unipennate manner and reached to its final insertion. Our case is unique and the possibility of the presence of such an anomalous huge muscle must always be remembered by the clinicians when a patient has findings of ulnar nerve compression syndrome or hypovascularity symptoms in the hand area due to the compression of ulnar artery.Keywords: accessory flexor digiti minimi brevis muscle; anatomy; flexor digiti minimi longus muscle; human cadaver variation Anatomy 2015;9(1): [45][46][47]

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An accessory flexor digiti minimi brevis or flexor digiti minimi longus?

Beşer¹,

Sargon²,

Erçakmak³

2015

Anatomy

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“…It's important to describe the intimate relation of the muscles of the hypothenar region whit the adjacent neurovascular structures: the ulnar nerve divides itself in superficial and deep terminal branches. The superficial branch crosses the superficial palmar arch by its medial side and lies on the hypothenar muscles, of which the majority is innervated by the deep terminal branches (BAKINDE, YOTOVSKI, VOIGT et al, 2005). The deep branch passes deeply between the abductor digiti minimi and the flexor digiti minimi brevis muscle, which it innervates.…”

Section: Case Reportmentioning

confidence: 99%

Anatomic variation of the flexor digiti minimi brevis muscle: a morphological and functional study: case report

et al. 2015

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Introduction: A great amount of accessory and supernumerary muscles, or even their absence, has already been described in medical literature, related to Anatomy, Surgery and Radiology. In the majority of cases, muscles with any morphological changes, in their origins, insertions, number of muscle bellies and anomalous vascular or nervous patterns, are asymptomatic. However, approximately 3% of compression neuropathy cases are results of an anomalous muscle. Material and methods: During a routine dissection, an anatomical variation was found on the left hypothenar region of an afrodescendant adult's corpse, which led the authors to further investigate its incidence and the clinical significance of this variation, basing up of articles published in refereed journals and renowned books on this subject. Results: Many authors have already identified numerous muscle variations in the hypothenar region, whether in dissection labs or in private clinics. Since some muscular variations may cause numerous clinical symptoms, it's important to have a detailed anatomical knowledge of the correspondent region. There are cases of ulnar nerve compression caused by an anomalous flexor digiti minimi brevis described in the medical literature. The majority of authors explained the nervous and vascular compression from some factors as injury, small repetitive traumas, genetically predetermined muscle size and muscular hypertrophy. Conclusion:The importance of differential diagnosis to any affections of the hypothenar region lies on the anatomical and surgical knowledge of the structures quoted in this study, the statistics related to the prevalence of these anatomical variations and the relevance of these in the present case.

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“…In previous descriptions a similar accessory ADM muscle beam was reported to originate from palmaris longus and the palmar aponeurosis (Wood, 1867;Soldado-Carrera et al, 2000), from the flexor carpi radialis tendon (Bakinde et al, 2005), from the flexor carpi ulnaris tendon (Hill et al, 2006), from the transverse carpal ligament (Netscher and Cohen, 1997), solely from the deep antebrachial fascia (Jeffery, 1971;Salgeback, 1977;Turner and Caird, 1977) or both from the flexor retinaculum and deep antebrachial fascia (Sheppard et al, 1991;Sanudo et al, 1993;Netscher and Cohen, 1997;Vollala et al, 2005). In the present case the additional ADM took origin from the deep antebrachial fascia and the tendon of FDS muscle to the middle finger.…”

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confidence: 92%