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1

A note on the morphology of the metopic suture in the human skull

100%
Skrzat J., Walocha J., Zawilinski J.
Folia Morphologica
|
2004
|
tom 63
|
nr 4
The metopic suture of 24 adult skulls investigated showed recognisably varied morphological patterns. The metopic suture resembled wavy lines and was sometimes highly convoluted, especially in the superior part of the frontal bone. The mean suture length was computed as 123.1 mm (SD = 5.307) and the mean fractal dimension was 1.17 (SD = 0.076). Visual inspection of the morphological character of the metopic sutures revealed complex variation in their course between the nasion and the bregma. Comparison of the fractal dimensions indicated a two-fold increase in complexity between the anterior half of the suture terminating in the nasion (FD = 1.10) and the second half of the suture beginning in the bregma (FD = 1.21). The Mann-Whitney test confirmed the statistical significance of the differences in the fractal dimensions calculated. The variety and complexity of the interdigitations in the anterior and posterior part of the suture point to possible alterations to local strains, which occur during the growth of the braincase.
2

A morphometrical study of the human palatine sutures

58%
Skrzat J., Holiat D., Walocha J.
Folia Morphologica
|
2003
|
tom 62
|
nr 2
The paper presents metrical data on the palatine sutures of a dry skull collection comprising 29 male and 33 female specimens. The length and mutual proportions of the mid-palatal, interpalatine and transverse palatine sutures were considered. These properties led to a conclusion as to the extent to which the palatine process of the maxilla and palatine bones dominate in the formation of the hard palate. We discovered that the palatine process of the maxilla is prevalent and that it constitutes approximately 65% of the hard palate in both sexes. Moreover our findings indicated a significant correlation in the diameters of the palatine sutures that are arranged sagittally.
3

Fractal dimensions of the sagittal [interparietal] sutures in humans

58%
Skrzat J., Walocha J.
Folia Morphologica
|
2003
|
tom 62
|
nr 2
Traditional studies of the cranial suture morphology have focused mostly on visual estimation and linear measurements, and thus on evaluating their complexity. This paper presents a new look on cranial sutures as curves, which can be analysed by fractal dimension. This new measure seems to be a much better method of expressing properties of sutural patterns than traditional methods. Our findings suggest that the fractal dimension of non-complicated interparietal sutures slightly exceeds the topological dimension of the line, that is 1.0, whereas the fractal dimension of complicated sutures may reach a value of 1.4 or even more. The difference between the minimum and maximum decimal fraction of the fractal dimension indicates a three-fold increase in complexity in the investigated sutures.
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