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Estimation of crown-heel length of foetuses from its clavicle length

Author : Y. Pydi Raju, N. Indira Kumari

At the discovery of foetal bones, skeletal parts or individual bone; the investigating officer will ask the forensic medical expert's opinion about; whether bone or bones belongs to human or not? If human, what is the sex, stature, age, if possible the cause of death .If the foetal bones are discovered, the problem is particularly difficult in giving the opinion. In case of criminal abortion or dead foetuses from deep soil or from otherwise dismembered, the forensic medical expert is asked to determine the age, maturuty or immaturity of foetus to establish the viability at the time of birth. Previous experts proved that foetal age length can be measured with remarkable accuracy following a study of even with a single bone. The applicability of these methods are restricted to availability of extremities (limb long bones) bones. In this present study, the methods adopted by Dr. Gy Fazekas and Kosa were used to determine the crown heel length of foetus from clavicle measurement by applying regression equation derived in present. According to Dr.Fazekes and Koas (1965-67) examinations, there is a linear correlation between the body length and intra-uterine development and growth of bones of the foetus. On this basis, the body length, consequently the age can be measured. Earlier multiplication factors were taken to estimate the body length which proved to be rough method. To get more accurate results mathematical and statistical methods are employed with calculation of regression equation and relative numbers are established with the clavicles examined. The clavicles (which shows parallel growth with those of foetus in utero and are resistant to decay) were collected and measured in dry state with the help of callipers with a sliding scale upto an accuracy of 0.1m.m.The crown heel lengths in Cms of foetuses were estimated with reasonable accuracy by applying the regression equation obtained during present study and the regression formula arrived at, in the present study is found to be fit Visakhapattanam, Andhra Pradesh.


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