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Biomedical subjects

V N Zviagin

Publications and source records attributed to V N Zviagin.

At least 19 recordsLinked to original sources
PubMedDate not supplied

[The determination of head circumference and hat size in the expertise of the human skull].

Based on the results of examinations of craniocephalic characteristics in 47 corpses of adults of both sexes, a method for identifying the head circumference and hat size has been developed for expert evaluation of skeletonized rudiments. Hats known to belong to the lost subjects are proposed to be used as the reference samples. The author emphasizes the importance of the time when the hat was made and its position on the head.

Adult↗
PubMedDate not supplied

[Computer analysis of face and skull size by "quantitative verbal portrait" method].

The aim of this study was to develop a "quantitative verbal portrait" method on the basis of universal measured signs of the face and skull. The database includes 90 cases with expert evaluation of photocompatibility with proven identity. Four groups of signs were investigated: DX and DY--the width and height between accurately fixed concrete craniometrical (facial) points and the so-called RX and RY indices--the ratio between distances within the framework of the same direction. The proposed scheme of evaluation helps compare the photograph of a live human and the skull. For evaluating the degree of identity, one should have a summary characterization of all selected signs for the skull and compare it with the sum on the photograph; sometimes it is possible to rule out the identity of the photograph and the skull by the absolute size, e.g., a very large skull cannot belong to a human with a very little face. The score for each group of signs is used for analysis of the information for detecting the similarities. Accumulation and comparative analysis of two information flows are possible: database on portraits of lost subjects and database on graphic images of the skulls of unidentified corpses.

Face↗
PubMedDate not supplied

[Medical anthropological aspects of hand phalanx dermatoglyphics].

Main and middle phalanx skin patterns represent a polymorphic hereditary system of signs practically not studied in anthropology, but interesting for forensic medicine and criminology from the viewpoint of expert evaluation of relation and personality identification. Based on a vast scope of data (600 hand impressions of 300 subjects from Russian families), a classification of patterns on the main and middle finger phalanges has been developed and their incidence evaluated. The proposed classification includes 15 types and 40 subtypes. The incidence of individual patterns on phalanges of different site and order has been determined. The problem of genetic determination, i.e. inheritance of certain patterns from father and mother, remains open and requires a special research.

Adult↗
PubMedDate not supplied

[Computer-aided personality identification by skull and life-time photography by POSKID 1.1 method].

An improved method for computer-aided personality identification by the skull, based on the POSKID 1.1 software, consists in investigation of enlarged images of the skull and life-time photograph of the probable individual by coordinates of 49 anatomical points; independent quantitative evaluation of the aspect of each of the compared objects by the X, Y, and Z axes; formal evaluation of the results of comparative study of the skull-portrait by multidimensional discriminant analysis models. The proposed version differs from the POSKID 1.0 software in the method for evaluating the spatial position of the head on the portrait and adequate orientation of the skull in space, which necessitates the utilization of coordinate-regulated holder POSKID 1.1 method is based on multidimensional discriminant analysis and suggests a virtually reliable solution in 76.13-80.65% cases, a probable solution (positive and negative) in 11.61-18.06% cases, and motivated refusal from solution in 5.81-7.74% cases. In case of a probable or indefinite solution further investigations are recommended making use of life-time photographs with different aspects.

Computer Simulation↗
PubMedDate not supplied

[Restoration of the fragmented skull in expert human identification].

Restoration of fragmented skull in expert personality identification is attained by assembly of bone fragments, modeling of bone defects by means of special plastic, and mathematical prediction of the lacking craniometric parameters. The authors suggest 111 equations of multiple linear regression which can be used in restoration of fragmented cerebral and facial parts of the skull. Prediction of craniometric parameters is useful for control and correction of plastic restoration of the skull. Regression equations are the most efficient in cases when the mandible is absent or in defects of symmetrical right- and left-side fragments of the skull. All stages of restoration are illustrated with examples from expert practice.

Forensic Anthropology↗
PubMedDate not supplied

[Geometric method for determining the skull-portrait aspect in craniofacial identification of the body].

Correspondence of the reference graphic images by the aspect is an important condition of craniofacial personality identification. The authors propose methods of determining the skull-portrait aspect by X and Y axes simultaneously. This allows 2 potentialities of comparing the photograph and the skull picture: 1) positioning the skull in a strictly determined aspect estimated by analysis of coordinates of reference points on the photoportrait and 2) positioning the skull and re-estimation of the photoportrait coordinates into the "zero" aspect (zero turning, inclination, and lateral deviation). Hence, all coordinates of the reference points of examined graphic images in the database can be estimated for the zero position and the same scale, which helps automate the search for analogs.

Face↗
PubMedDate not supplied

[Categories of variability in the thickness of human skull bones].

Problems in standardization of the thickness of skull vault bones at certain strictly determined points are discussed. Race, ethnic, regional, and sex-associated variability of this criterion was studied on extensive material for many peoples of the world (1261 men, 549 women, and 570 men + women). The most significant differences are characteristic only for the male and female totalities. A table of categories of the skull bone thickness has been created, covering 5 intervals with the following incidence: 33% medium, 22% low and high (each), and 11% very low and very high (each). An expert example is offered.

Adolescent↗
PubMedDate not supplied

[Study of the skeleton of Admiral F. F. Ushakov].

Reports the results of examination of the skeleton of Admiral F. F. Ushakov, carried out in connection with canonization in the Russian Orthodox Church. Heretofore unknown data on the somatic characteristics of F. F. Ushakov and his diseases are presented. Special attention is paid to uneven age involution of the skeleton and the hypoergic aging velocity. A detailed morphological similarity between the skulls of F. F. Ushakov and monk Feodor (Admiral's uncle, I. I. Ushakov) evidenced common features inherited through the masculine line. Modern computer technologies showed that the appearance of F. F. Ushakov, determined by the skull and postcranial skeleton, agree with his appearance on the life-time portrait, in spite of Professor M. M. Gerasimov's opinion (1949). In this connection, the possibility of repeated reconstruction of Admiral Ushakov's appearance is proven.

Christianity↗
PubMedDate not supplied

[Possible express identification of human remains in case of their intense destruction after exposure to physical factors].

The problem of identification of human remains is still one of the most difficult and pressing problems of forensic medicine. Such identification is particularly difficult in cases of intense destruction caused by exposure to physical factors (explosion, contusion, fire, compression, etc.). Approaches to identification in such cases are less available and differ essentially from traditional approaches used, for example, in cases when the remains are exposed to natural long-acting factors. This "white spot" is attempted to be liquidated by investigating aircraft accidents with grave destructive results. The potentialities of express identification of human remains in such cases are shown and a complex of characteristic signs which can serve as the landmarks are distinguished. The authors emphasize the strict adherence to certain regulations when working at the site of technogenic disasters and the hazards of disordering the process of identification in case these regulations are neglected.

Accidents, Aviation↗
PubMedDate not supplied

[Craniometric diagnosis of skeletal and somatotype mass].

The paper presents diagnostic models for evaluation of ash mass (bone fragments, bone ashes), sex, length and mass of the burned body. Individual data by M. Warren and W. Maples (1997) on 85 adult Americans were used. On the basis of a canonical discriminant analysis and multiple linear regression equations the authors have developed models for diagnosis of ash residue mass as well as the burned body's sex, body length and mass. The above models can be used directly on the place of the criminal body cremation. They do not require determination of anatomic appurtenance of bone fragments and their osteometric examination.

Adult↗
PubMedDate not supplied

[Diagnosis of skeletal massiveness and somatic type of man by blood type].

The oseological collection of the chair for anthropology, Moscow State University, including 7 mature male foot bones and 13 mature female foot bones, was studied. The canonical and discriminative analyses were made use of to work out a diagnostic model designed for determining the massiveness of the skeleton on the basis of measurement features of the tarsus and metatarsus bones. Besides, models for the diagnosis of a body constitution on the basis of separate foot segments were elaborated. The correct classification based on the metatarsus osteometry amounts to 67.2%, and the one based on the osteometry of tarsus--to 58.3%. Cases from the practice of experts are described, which significantly facilitates the mastering of the suggested methods.

Anthropometry↗
PubMedDate not supplied

[Methods of making the plaster copies of skulls for the medical and criminalistic identification of individuals].

A possibility was studied to use the plaster copies of skulls in the forensic medical identification of personality by applying the craniofacial method. No dependence was found between the plaster casts and the moulding types. Differences between the same craniometric sizes in the skull and in its cast are of an incidental nature. Such incidental deviation is related with an accuracy of determining the localization of craniometric points and with an instrumental precision of measuring devices. The necessity is substantiated that, while making a craniofacial examination, it is necessary to mark all anthropometric points in the skull cast, with the original being a control. The use of a plaster skull cast is possible in those cases, when the burial of the remains must be done in full.

Calcium Sulfate↗
PubMedDate not supplied

[The ordinal localization of multiple mono-type carpal bones].

The case study was based on the osteologic collection of the chair for anthropology, State Moscow University, including the male carpal bones (67) and female carpal bones (13), aged above 18 to 20. Four measurements were made according to Martin's scheme for metacarpal bones and finger phalanxes. A diagnostic method was worked out on the bases of the discriminative analysis, with such method enabling the remodeling of the ordinal localization of metacarpal bones as well as of main, medium and distal phalanxes. The maximally accurate classification was ensured for metacarpal bones, ranging from 81.5% to 100%; and the minimally accurate one was achieved for distal phalanxes, ranging from 20% to 95%. The discriminative analysis results were checked for distal phalanxes by Neklyudov's series (male--100, female--85); they were described according to 7 sizes. However, an attempt to enhance the accuracy of the classification of these phalanxes failed. The offered method should be applied in combination with the traditional anatomic-and-morphological method; besides, if possible, it is necessary to check the congruence of joint surfaces in the metacarpal interphalangeal joints.

Adolescent↗
PubMedDate not supplied

[Problem-oriented analysis of the medical-anthropologic identification in forensic medicine].

The paper deals with a detailed analysis of the key trends in the current forensic-medical anthropology. The attention is focused on diagnosis of group personality signs: presence of osseous substance, species diagnosis, attribution of remains to one or several cadavers, determination of a possible residence territory, group adherence of the osseous and tooth tissues, as well as determination of race, sex, age, stature, etc. Such topical issues as personality reconstruction by skull, establishment of kindred, and special identification tools are detailed. Finally, conditions affecting the objects of expertise, i.e. prescription of corpse burying, fragmentation, signs of cadaver extermination, are also elucidated.

Age Determination by Skeleton↗
PubMedDate not supplied

[The ordinal localization of mono-type foot bones].

The osteologic collection of the chair for anthropology, Moscow State University, comprising male (n = 70) and female (n = 14) foot bones from persons aged more than 18-20, was investigated. An appropriate Martin program was fixed to the instep bones (IB) of the proximal and middle toe phalanxes (4 sizes for each bone) with 65 signs being studied in each case. The mathematical data processing was SPSS-aided. Diagnostic models for defining the order IB localization in the proximal and middle phalanxes were elaborated on the basis of discriminative analysis. The classification accuracy is maximal for IB (80-100%) and minimal for the middle phalanxes (26.19-77.38%). The definition of the order localization of phalanxes in toes 2-5 is virtually impossible. The designed method can be used alongside with the routine anatomic-and-morphological findings. The congruence of surfaces in the instep-phalanx and interphalangeal joints must be necessarily checked.

Female↗
PubMedDate not supplied

[Diagnostics of the skeletal massiveness and human somatotype using hand bones].

The skeleton massiveness (SM) and the somatotype of human constitution were determined on the basis of osteometry of bones of carpal and metacarpal bones (MB) and of phalanxes. Seventy male and 13 female skeletons from the collection of the chair for anthropology, Moscow State University, were investigated. Described are the results of examinations of 8 carpal bones made according to 3 signs (length, width, and height), and of 5 metacarpal bones made according to 4 signs (length, base and head width, and base height); investigation findings of finger phalanxes (in full) are also presented. Methods of current multidimensional statistics were used within the case study, i.e. related with the key components--for SM specification and the discriminative analysis--for constitution specification. The SM determination accuracy according to type A was 40%, according to type B--80%, according to type C--37.5% and according to type D--52.9%. The classification accuracy of constitutions by carpal bones was 50.0%, by MB--46.4%, and by MB plus finger phalanxes--48.1%. It is pointed out that it was for the first time that the elaborated quantitative criteria of osteometry of hand bones could be used in the expertise practice for the purpose of personality identification by osseous remains.

Adult↗
PubMedDate not supplied

[Determination of some somatic body dimensions by osteometric foot measurements].

Methods of diagnosis of somatic life-time peculiarities of man (body height, shoulders breadth and dimensions of extremities and their segments) were elaborated on the basis of a study of interrelations between the human body-built features, on the one hand, and measurement characteristics of the foot, on the other hand, by using the modern programs of multi-measurement statistics. Isolated skeleton bones of osseous complexes and fragments of native and burnt bones were the research objects. Footwear and cloths items, which belonged to an actual missing person, can be identification objects. The paper is primarily addressed to forensic medical experts and can be useful for criminalists, anthropologists and archeologists.

Anthropometry↗