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Studies on certain forensic aspects of skull identification and individualization /
Abstract
Thesis (Ph. D.)--University of Madras, 1986. Includes bibliographical references and index.
... Although the skull suture patterns have been indicated as useful for individualization, it had been suggested that radiographs taken before the 7th year should be compared with the patterns in a grown up skull with due caution [3] implying that the patterns in the cranial sutures stabilize during the 7th year of growth. In a subsequent occasion, Chandra Sekharan [4] indicated the 2nd year of skull growth as the period during which the sutures stabilize. While prescribing criteria for suture based identification to meet Daubert standards, Rogers and Allard [5] also agree that both the antemortem and postmortem radiographs must have been taken after the 7th year for considering them as sufficient for comparison to establish a positive identification. ...
... Jayaprakash reported patterned endocranial suture in a 10 year old skull and also illustrated its influence on the ectocranial pattern during radiography [22]. The presence of patterned endocranial suture in a 10 year old skull and the absence of patterns in adult skulls do not support the supposition by Chandra Sekharan [4] that after the second year, the suture pattern in the skull would only expand until the vault reaches its adult dimension by the 7th year. While evaluating the cranial suture method for the purpose of 'positive' identification in the light of Daubert and Mohan criteria, Rogers and Allard [5], following Chandra Sekharan [3] suggested that antemortem and postmortem radiographs taken after the 7th year would be sufficient to establish positive identification based on suture pattern comparison. ...
... To suit forensic contexts, the term suture or sutural morphology would to include the patterns seen on the ectocranial or the endocranial surfaces of two articulating calvarial bones as well as the influence of the interdigitations in radiographic images. Chandra Sekharan [4] classified suture patterns into 10 types. Three of the above 10 types, viz. ...
Forensic identification of juvenile skulls is a problem area. Although the skull suture patterns have been suggested for use in individualizing human remains by comparing antemortem and postmortem radiographs, the age at which such patterns stabilize and can be useful for identification had been indicated as 7 years. Subsequent researchers have also concurred that antemortem and postmortem radiographs taken after the 7th year would be sufficient to meet the Daubert standard criteria for identifying skulls using radiographs. The suggestions regarding the lower age limit for stabilization of suture patterns have not been verified so far. In this research, the patterns of the sutures in the ectocranial and endocranial surfaces of the lambdoid region in 22 juvenile skulls (age range 1-10 years) and 100 adult skulls (age range 17-70 years) were studied for the relative incidence of different types of suture patterns. The radiographic recordings of the suture patterns in the juvenile skulls were also compared with the patterns seen in the ectocranial and endocranial surfaces. The findings of this study support the proposition that the suture patterns are plastic during the juvenile stage and that they undergo significant remodeling during growth into adulthood. Indicating the possibility of growth related alterations in the sutural morphology, the onset of adulthood is suggested as the age for stabilization of suture patterns in the context of prescribing standards for such criteria as those relating to Daubert.
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