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Biomedical subjects

O V Samokhodskaia

Publications and source records attributed to O V Samokhodskaia.

6 recordsLinked to original sources

[Age-specific changes in bone tissue microstructure and potential for use for human identification].

The possibility of using the data of quantitative microscopy of bone tissue for evaluation of age with the aim of personality identification is discussed. Computer histomorphological analysis of third rib, tibial lower epiphysis and diaphysis fragments from 564 male corpses of known age (0-90 years) was carried out. A complex of parameters most strongly correlating with age was detected: extension of active osteogenesis zone in the longitudinal section of a rib, thickness of layers of internal and external general diaphyseal laminae in the tibial bone, trabecular area in the tibial epiphyseal preparation, etc. Age-specific changes in bone tissue structures is characterized by a great variety and depends on the type and location of these structures. Bone tissue characteristics change irregularly and asynchronously, therefore their correlations with age are different in different age groups. A general biological interpretation of the results is offered.

Adolescent↗

[The craniometric individuality of the human skull].

Experimental findings indicate that if the basic position of the skull is assessed visually (as is usually done in expert photocombination), various video images of the same skull never fully conform to each other, the deviations reaching 1.5 and more degrees. As a result of this, the accuracy of determining the reference points on the video image varies from 1.-1.5 to 4.0-4.5 mm (en face) and 1.5-2.0 to 6.0-6.5 mm (profile). The task of identification of two images of the skull is reliably solved in 87.7% cases, and in 12.3% cases the results may be false-positive or false-negative. The individuality of the skull, that is, the impossibility of its replacement during computer-aided photocombination is realized in the absence of aspect distortions and minimal errors of measurements. Hence, a new technology of studies is to be introduced: coordination-monitored stable complex of video camera and computer with metric monitoring of all parameters liable to change.

Cephalometry↗

[The medical anthropological study of the bone remains from the Yekaterinburg burial].

Results of medical anthropological expert studies of bone remains of Emperor Nicholas II, his family members, and persons in their attendance are presented. Craniological (including computer photoblending), odontological, osteometric, and spectral methods were sued. Numerous photographs, Imperial Family clothes from museums, soil specimens from Tsarskoe Selo and place of burial were used. Expert studies confirmed previous conclusions on personal identification of skeletons as Nicholas II and four Imperial Family members. Additional proofs of identification of skeleton No. 6 as Great Princess Anastasia Nikolaevna are presented. No remains which could be identified as Cesarevich Alexei Nikolaevich and Great Princess Maria Nikolaevna were found. The so-called "adolescent teeth" are upper teeth of a subject aged 17-18. Rare odontoglyphic characteristics of these teeth permit referring them only to skull No. 6 (Great Princess Anastasia Nikolaevna) but not to an adolescent, specifically, to Cesarevich Alexei Nikolaevich.

Bone and Bones↗