Assessment of Foetal Age on the Basis of the Selected Dimensions of the Thorax

Woźniak, Jowita; Kędzia, Alicja; Dudek, Krzysztof

doi:10.17219/acem/37257

Cited by 4 publications

(10 citation statements)

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“…The goal of this study was the mathematical assessment of foetal age with the use of thorax selected dimensions (Woźniak et al 2014). The material consisted of 110 foetuses aged 4–7 months of foetal life, including 50 females in the CRL range: 80–233 mm.…”

Section: Discussionmentioning

confidence: 99%

“…Foetus biometrics allows us to assess the mathematical relation between gestational age foetus biometric parameters. Six monofunctional mathematical models were elaborated: a Bertalanffy growth curve, three Gompertz function based models and two exponential models to assess examined parameters increase along with t age (Woźniak et al 2014). …”

Section: Discussionmentioning

confidence: 99%

“…Foetal period is still poorly recognized. Our own studies (Dudek et al 2014; Kedzia et al 2010a; 2011a, b, 2013a, b; Woźniak et al 2012, 2014) have enabled the assessment of foetal structures by geometric dimension increase curve. Neither sexual dimorphism nor asymmetry was very characteristic.…”

Section: Introductionmentioning

confidence: 99%

“…Own examinations (Dudek et al 2014; Kędzia et al 2010, 2011a, b, 2012, 2013; Woźniak et al 2012, 2014) show that revealed dependencies y ( t ) − t can be described accurately enough with one mathematical function only. Most often, exponential, power, logarithmic-logistic, Gompertz’s and von Bertalanffy’s models proved to have the best matching measurement results.…”

Section: Introductionmentioning

confidence: 99%

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Mathematical modelling of the growth of human fetus anatomical structures

Dudek

Kędzia

et al. 2016

Anat Sci Int

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The goal of this study was to present a procedure that would enable mathematical analysis of the increase of linear sizes of human anatomical structures, estimate mathematical model parameters and evaluate their adequacy. Section material consisted of 67 foetuses—rectus abdominis muscle and 75 foetuses- biceps femoris muscle. The following methods were incorporated to the study: preparation and anthropologic methods, image digital acquisition, Image J computer system measurements and statistical analysis method. We used an anthropologic method based on age determination with the use of crown-rump length—CRL (V–TUB) by Scammon and Calkins. The choice of mathematical function should be based on a real course of the curve presenting growth of anatomical structure linear size Ύ in subsequent weeks t of pregnancy. Size changes can be described with a segmental-linear model or one-function model with accuracy adequate enough for clinical purposes. The interdependence of size–age is described with many functions. However, the following functions are most often considered: linear, polynomial, spline, logarithmic, power, exponential, power-exponential, log-logistic I and II, Gompertz’s I and II and von Bertalanffy’s function. With the use of the procedures described above, mathematical models parameters were assessed for V-PL (the total length of body) and CRL body length increases, rectus abdominis total length h, its segments hI, hII, hIII, hIV, as well as biceps femoris length and width of long head (LHL and LHW) and of short head (SHL and SHW). The best adjustments to measurement results were observed in the exponential and Gompertz’s models.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Mathematical modelling of the growth of human fetus anatomical structures

Dudek

Kędzia

et al. 2016

Anat Sci Int

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“…The anthropological method allowed to determine the biological age of the examined fetuses. The morphological age was assessed using measurable parameters such as total body length (v-pl), crown-rump length (CRL or v-tub) and body weight [29]). The preparation method was based on exposing the superior gluteal nerves on 80 limbs using standard sectional instruments.…”

Section: Methodsmentioning

confidence: 99%

The morphometrical and topographical evaluation of the superior gluteal nerve in the prenatal period

et al. 2022

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Introduction Advances in medical science are helping to break down the barriers to surgery. In the near future, neonatal or in utero operations will become the standard for the treatment of defects in the human motor system. In order to carry out such procedures properly, detailed knowledge of fetal anatomy is necessary. It must be presented in an attractive way not only for anatomists but also for potential clinicians who will use this knowledge in contact with young patients. This work responds to this demand and presents the anatomy of the superior gluteal nerve in human fetuses in an innovative way. The aim of this work is to determine the topography and morphometry of the superior gluteal nerve in the prenatal period. We chose the superior gluteal nerve as the object of our study because of its clinical significance—for the practice of planning and carrying out hip surgery and when performing intramuscular injections. Material and methods The study was carried out on 40 human fetuses (20 females and 20 males) aged from 15 to 29 weeks (total body length v-pl from 130 to 345 mm). Following methods were used: anthropological, preparatory, image acquisition with a digital camera, computer measurement system Scion for Windows 4.0.3.2 Alpha and Image J (accuracy up to 0.01 mm without damaging the unique fetal material) and statistical methods. Results The superior gluteal nerve innervates three physiologically significant muscles of the lower limb’s girdle: gluteus medius muscle, gluteus minimus muscle and tensor fasciae latae muscle. In this study the width of the main trunk of the nerve supplying each of these three muscles was measured and the position of the nerve after leaving the suprapiriform foramen was observed. A unique typology of the distribution of branches of the examined nerve has been created. The bushy and tree forms were distinguished. There was no correlation between the occurrence of tree and bushy forms with the body side (p > 0.05), but it was shown that the frequency of the occurrence of the bushy form in male fetuses is significantly higher than in female fetuses (p < 0.01). Proportional and symmetrical nerve growth dynamics were confirmed and no statistically significant sexual dimorphism was demonstrated (p > 0.05). Conclusions The anatomy of the superior gluteal nerve during prenatal period has been determined. We have identified two morphological forms of it. We have observed no differences between right and left superior gluteal nerve and no sexual dimorphism. The demonstrated high variability of terminal branches of the examined nerve indicates the risk of neurological complications in the case of too deep intramuscular injections and limits the range of potential surgical interventions in the gluteal region. The above research may be of practical importance, for example for hip surgery.

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Anatomical variations of the brachial plexus in adult cadavers: A descriptive study and clinical significance

Han,

An,

Zilundu

et al. 2024

Microsurgery

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BackgroundBrachial plexus injury is recognized as one of the most severe clinical challenges due to the complex anatomical configuration of the brachial plexus and its propensity for variation, which complicates safe clinical interventions. This study aimed to ascertain the prevalence and characterize the types of brachial plexus variations, and to elucidate their clinical implications.Materials and MethodsWe conducted meticulous dissections of 60 formalin‐fixed cadavers' upper arm, axilla and lower neck to reveal and assess the roots, trunks, divisions, cords, and branches of the brachial plexus. The pattern of branching was noted by groups of dissecting medical students and confirmed by the senior anatomists. The variations discovered were record and photographed using a digital camera for further analysis.ResultsVariations in the brachial plexus were identified in 40 of the 60 cadavers, yielding a prevalence rate of 66.7%. These variations were classified into root anomalies (2.1%), trunk anomalies (8.5%), division anomalies (2.1%), and cord anomalies (4.3%). Notably, anomalies in communicating branches were observed in 39 cadavers (83.0%): 14 with bilateral anomalies, 14 with anomalies on the left side, and 11 on the right side. These communicating branches formed connections between the roots and other segments, including trunks, cords, and terminal nerves, and involved the median, musculocutaneous, and ulnar nerves.ConclusionThe frequency and diversity of brachial plexus variations, particularly in communicating branches, are significant in cadavers. It is imperative that these variations are carefully considered during the diagnostic process, treatment planning, and prior to procedures such as supraclavicular brachial plexus blocks and nerve transfers, to mitigate the risk of iatrogenic complications.

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Assessment of Foetal Age on the Basis of the Selected Dimensions of the Thorax

Cited by 4 publications

References 18 publications

Mathematical modelling of the growth of human fetus anatomical structures

Mathematical modelling of the growth of human fetus anatomical structures

The morphometrical and topographical evaluation of the superior gluteal nerve in the prenatal period

Anatomical variations of the brachial plexus in adult cadavers: A descriptive study and clinical significance

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