[Forensic age diagnosis by assessment of sternum ossification processes]

To study the sternum ossification processes that take place over time as well as the possibilities of sternum X-rays application to evaluate the age on the modern Russian population in forensic terms.

Sternum X-rays with fragments of ribs' chondral parts were obtained from 369 male and female corpses aged 12-96 years without pathological and traumatic changes. The X-rays were done in frontal projection. The set of examined parameters included: complete and partial synostosis of manubrium and body, induration along the synostosis (or on the articulated edges of manubrium and body), complete and partial synostosis of body segments, traces of body segments union, complete and partial synostosis of body and xiphoid process, induration along the synostosis (or on the articulated edges of manubrium and body), form of costal notches, induration of articular edges of body, presence of calcification foci in sternal edge of II-VII ribs' cartilages, depth of sternum notches, overgrowths on articular edges of body, presence of union between body's costal notches and calcification centers of ribs' cartilages. Mean values, standard deviation and correlation coefficient were determined.

The maximal correlation with age was found in such parameters such: overgrowths on articular edges of body (r=0.6), presence of calcification foci in sternal edge of II-VII ribs (r=0.6), induration of body's articular edges (r=0.5), presence of union between costal notches and calcification centers of ribs cartilages (r=0.5), synostosis of body and xiphoid process (r=0.4).

A subsequent construction of linear model for age diagnosis has its details when comparing the predicted age with the real.