Quantitative Anatomy of the Trapezius Muscle in the Human Fetus

Badura, Mateusz; Grzonkowska, Magdalena

doi:10.17219/acem/61899

Cited by 9 publications

(8 citation statements)

References 16 publications

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“…In accordance with the previous study results on morphometric properties of different muscle groups [2,4,13,14,17], this study revealed a rational increase in numerical values of TFL surface area, width and lengths from 18 th to 30 th week and showed no statistically significant difference between sides and sexes.…”

Section: Discussionsupporting

confidence: 92%

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Morphometric properties of the tensor fascia lata muscle in human foetuses

et al. 2018

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In neonatal and early childhood surgeries such as meningomyelocele repairs, closing deep wounds and oncological treatment, tensor fasciae lata (TFL) flaps are used.However, there are not enough data about structural properties of TFL in fetuses, which can be considered as the closest to neonates in terms of sampling. This study's main objective is to gather data about morphological structures of TFL in human fetuses to be used in newborn surgery. Fifty formalin-fixed fetuses (24 Male -26 Female) with gestational age ranging from 18 -30 weeks (mean 22.94±3.23 weeks) were included in the study. TFL samples were obtained by bilateral dissection and then surface area, width and length parameters were recorded. Digital calipers were used for length and width measurements whereas surface area was calculated using digital image analysis software. No statistically significant differences were found in terms of numerical value of parameters between sides and sexes (p>0.05). Linear functions for TFL surface area, width, anterior and posterior margin lengths were calculated as y = -225.652 + 14.417 x Age (weeks), y = -5.571 + 0.595 x Age (weeks), y = -4.276 + 0.909 x Age (weeks) and y = -4.468 + 0.779 x Age (weeks), respectively. Linear functions for TFL surface area, width and lengths can be used in designing TFL flap dimensions in newborn surgery. In addition, using those described linear functions can also be beneficial in prediction of TFL flap dimensions both in autopsy studies.

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Section: Discussionsupporting

confidence: 92%

“…Although literature reported a number of differences in many muscle growth dynamics between fetuses [2,4,13,14,17,25], no quantitative studies on TFL were…”

Section: Discussionmentioning

confidence: 99%

Morphometric properties of the tensor fascia lata muscle in human foetuses

et al. 2018

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“…In this study, we demonstrated that in terms of morphometric parameters, the quadratus lumborum did not demonstrate any sex or right–left differences. Of note, neither sex nor right–left differences were found by the authors dealing with quantitative anatomy of other skeletal muscles in the human foetus, i.e., triceps brachii [ 10 ], biceps brachii [ 23 ], trapezius [ 1 ], deltoid [ 22 ], biceps femoris [ 24 ], semimembranosus [ 2 ], and semitendinosus [ 3 ] muscles. It should be emphasized that both the length and width of the growing quadratus lumborum grew proportionately, since the width-to-length ratio was relatively constant, reaching the value of 0.32 ± 0.04.…”

Section: Discussionmentioning

confidence: 99%

Quantitative anatomy of the growing quadratus lumborum in the human foetus

et al. 2017

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PurposesThe purpose of the study was to quantitatively evaluate the size of the quadratus lumborum and to precisely display its growth dynamics in the human foetus.Materials and methodsUsing anatomical dissection, digital-image analysis (NIS Elements AR 3.0) and statistical analysis (Student’s t test, regression analysis), the length, width, surface area, and cross-sectional area of the quadratus lumborum were measured, and the width-to-length ratio was calculated in 58 human foetuses of both sexes (26♂, 32♀) aged 16–27 weeks.ResultsNeither sex nor right-left significant differences were found in relation with the numerical data of the growing quadratus lumborum. The length, width, and cross-sectional area of the quadratus lumborum muscle increased logarithmically, while its surface area increased proportionately to fetal age. The following growth models were computed for the quadratus lumborum: y = −70.397 + 68.501 × ln(age) ± 1.170 for length, y = −20.435 + 8.815 × ln(age) ± 0.703 for width, y = −196.035 + 14.838 × age ± 13.745 for surface area, and y = −48.958 + 20.909 × ln(age) ± 1.100 for cross-sectional area.ConclusionsThe fetal quadratus lumborum reveals neither sex nor bilateral differences. An increase in length and width of the growing quadratus lumborum follows in a commensurate fashion. The quadratus lumborum grows logarithmically with respect to its length, width, and cross-sectional area, and proportionately to age with respect to its surface area.

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“…3,4 In addition, for the surgeon, these anatomical variations may be a contraindication to any flap trapezius surgery.…”

Section: Introductionmentioning

confidence: 99%

Review of the Literature on Anatomical Variations of the Trapezius Muscle

Nyemb

Fontaine

Ndoye

2017

MOJAP

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Introduction: The morphological diversity of the trapezius muscle is important, even if statistically these variations are rare. The authors of this work study anatomical variations of trapezius muscle in literature. Material and methods:A systematic review of the literature using several databases has identified the main anatomical variations present on the trapezius muscle. Anatomical variations:The most frequently reported anatomical variations are agenesis and unilateral or bilateralaplasia, trapezius hypoplasia, the presence of accessory portions of the muscle, and accessory nerve abnormalities. However, variations in their bony insertions, and asymmetries predominate by their frequency in the trapezius muscle Conclusion:The anatomical variations of trapezius muscle are real despite their rarity. They can have important functional consequences.

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Quantitative Anatomy of the Trapezius Muscle in the Human Fetus

Cited by 9 publications

References 16 publications

Morphometric properties of the tensor fascia lata muscle in human foetuses

Morphometric properties of the tensor fascia lata muscle in human foetuses

Quantitative anatomy of the growing quadratus lumborum in the human foetus

Review of the Literature on Anatomical Variations of the Trapezius Muscle

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