A recent research study findings with these conclusions have been published in the “Inderscience International Journal of Vehicle Safety”. This study was performed over 3000 people in all.

Jesse Ruan of the’ Ford Motor Company’ and his associate researchers at the ‘Tianjin University of Science and Technology’ have been successful in devising a ‘non-invasive method’ for the determination and analysis of the “critical geometric characteristics of a person’s skull”. For this purpose the researchers based their model on the head scan images of 3000 patients at the Tianjin Fourth central Hospital.

The researchers observed that for men the average thicknesses of the skull was 6.5 millimeters, while for women it was 7.1 mm. The average front to back measurement for men was 176 mm in men, and it was comparatively less in women with the measurement of 171 mm. Similarly, the average width was also measured to be 145 mm in men and 140 mm in women.

The findings of this study clearly confirmed that there exists a sizable difference in the skull thickness between both the genders. The researchers are of the views that they must make further attempts to trace out the mechanisms of translating these differences in to the “head impact responses” for men and women separately.”Then we can design the countermeasure for head protection”, says Jesse Ruan.

It is a general conceptualization that the thickness of the skull is an important factor for deciding the head safety and a bigger sized skull will be far safer for surviving a head injury. This study however, established that it is not the thickness alone, but the shape of the skull is also equally important. Scientists are still making sincere efforts to understand the exact nature, behavior, and relationship between these two important parameters.

A detailed relationship and linkage exploration will perhaps open new findings on how well a person tolerates a head injury. Present methods are purely based on extrapolation of smaller skull to large skull and the skull thickness for predicting the possible impacts and their effects.

Detailed analysis of 300 people responses and examination of different skull parameters however show that the present extrapolation techniques are totally invalid because the distribution of skull size, shape and thickness do not follow a so-called “normal” distribution pattern.

Researchers feel that the “Reliable biomechanical geometric data” of the human skull would be more helpful in developing a better understanding of the problem of head injury during an impact and “will help in the design of better head protective devices”, says Jesse Ruan.

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