Weave pattern of accessory heads to the anterior digastric muscle

Harvey, Jamison A.; Call, Zach; Peterson, K. L.; Wisco, Jonathan J.

doi:10.1007/s00276-014-1401-8

Cited by 7 publications

(7 citation statements)

References 7 publications

(9 reference statements)

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“…Muscle bellies may be supernumerary (double, triple, quadruple), and exist in exotic patterns such as interwoven and fractal [15,20,23,24,27,33,42,43]. These variant muscles may travel ipsilaterally or contralaterally [15,20,23,24,27,33,42,43]. Likewise, variations of the ABDM may be unilateral or bilateral; however, there are more reports of unilateral variations [25].…”

Section: The Anterior Digastric Musclementioning

confidence: 99%

The submental arrowhead variation of the mylohyoid and anterior belly of the digastric muscles

et al. 2018

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Purpose-Submental anatomical variation is of clinical importance with regard to head and neck surgeries. One such anatomical variation is that of additional musculature joining the intermediate tendon of the digastric muscle to the midline of the mylohyoid musculature-a variation which this report refers to, accordingly, as an arrowhead variation. Though the arrowhead variation has been described in several case reports, it has not been subject to cross-sectional study. The purpose of this study is to determine the prevalence of the arrowhead variation. Methods-Prevalence of the arrowhead variation was assessed in 19 cadavers via gross dissection. Results-Two of the 19 cadavers (10.5%) were found to have arrowhead variations. The arrowhead variation was found in one male (1:11; 9.1%) and one female (1:8; 12.5%), respectively. Conclusions-This report demonstrates that the submental arrowhead variation of the anterior digastric and mylohyoid musculature has been reported in isolated case reports since the nineteenth century. This report is the first cross-sectional study of the arrowhead variant, identifying it in approximately one in ten individuals and in both sexes. Therefore, the presence of an arrowhead variation should be regularly considered with regard to diagnosis of submental masses. Likewise, the arrowhead variation should be considered in the preoperative planning of the myriad operations performed in the submental region.

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Section: The Anterior Digastric Musclementioning

confidence: 99%

The submental arrowhead variation of the mylohyoid and anterior belly of the digastric muscles

et al. 2018

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“…2,[30][31][32][33][34][35][36][37][38][39] These variant muscles may travel unilaterally or traverse the midline. 2,[30][31][32][33][34][35][36][37][38][39] Therefore, variations in ABDM anatomy may potentially reveal equally diverse variation in RLAD anatomy. Variations in ABDM musculature may lead to surgical confusion during muscular medialization and suspension, which includes the ABDMs in a "digastric corset."…”

Section: Anatomical Variationmentioning

confidence: 99%

The Retaining Ligament of the Anterior Digastric Muscle

Zdilla

Swearingen

Miller

et al. 2017

Journal of Craniofacial Surgery

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The anterior belly of the digastric muscle (ABDM) is important in numerous esthetic surgeries including rhytidectomy, alteration of the cervicomental angle via partial resection of the ABDM muscle belly, and suprahyoid muscular medialization and suspension. Recently, the connection between the ABDM and the mylohyoid muscle (MH) has been proposed as important for the mechanism of the digastric corset procedure. This report refers to the connection between the ABDM and the MH as a type of retaining ligament of the anterior digastric muscle (RLAD). This report is the first to directly demonstrate the existence of the RLAD, via photograph and video, and document variation in its attachment sites, its composition, and its behavior when traction forces are applied. In addition to the importance of the RLAD in plastic surgery, the RLAD may affect neurovascular structures between the ABDM and MH and serve as a physical barrier separating the submental fascial space from the submandibular fascial space and, therefore, influence the spread of infection.

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“…3–9 These variant muscles may travel unilaterally or traverse the midline. 3–9 Likewise, additional muscle bellies may have attachments that are muscular or tendinous and well-defined, similar to that of a typical IT. 3–9 …”

Section: Introductionmentioning

confidence: 99%

“…3–9 Likewise, additional muscle bellies may have attachments that are muscular or tendinous and well-defined, similar to that of a typical IT. 3–9 …”

Section: Introductionmentioning

confidence: 99%

Morphometrics of the Anterior Belly and Intermediate Tendon of the Digastric Muscle

Zdilla

Pancake

Lambert

2016

Journal of Craniofacial Surgery

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The anterior belly of the digastric muscle (ABDM) is important in a variety of surgeries including submental lipectomy, rhytidectomy, alteration of the cervicomental angle via muscle resection, the “digastric corset” procedure for submental rejuvenation, the submental artery flap, and reanimation of the mouth after facial nerve palsy. Despite its clinical significance, little information exists regarding the morphometrics of the ABDM or its associated intermediate tendon (IT). This study analyzed a total of 35 intact ABDMs and 43 intact ITs from 23 cadavers. Measurements were taken of the following parameters: muscle belly area, muscle belly length, intermediate tendon length, and intermediate tendon width at mid-tendon. Normative descriptive statistics are included within the report. Males were found to have significantly longer left-sided muscle bellies than 1.) right-sided bellies from males (U=23.0; p=0.044), 2.) left-sided bellies from females (U=19.0; p=0.020), and 3.) right-sided bellies from females (U=12.0; p=0.035). The morphometry, including sexual dimorphism, presented in this report can aid in the surgical planning and execution of numerous operations performed in head and neck, especially digastric muscle transfer surgery.

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Weave pattern of accessory heads to the anterior digastric muscle

Cited by 7 publications

References 7 publications

The submental arrowhead variation of the mylohyoid and anterior belly of the digastric muscles

The submental arrowhead variation of the mylohyoid and anterior belly of the digastric muscles

The Retaining Ligament of the Anterior Digastric Muscle

Morphometrics of the Anterior Belly and Intermediate Tendon of the Digastric Muscle

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