A TWO-DIMENSIONAL MODELLING FOR HUMAN HIP STRESS ANALYSIS

This paper, based on the elasticity theory, a two dimensional modelling for the hip stress analysis in the sagittal plane is presented. Though the stress, in the normal human hip, is distributed over the entire crossection of the femur head, the main activities of the human being are limited in the sagittal plane. Moreover, a 2-D modelling for the stress analysis is much simpler and easier than 3-D one; especially it can be combined with the clinical standard anterior posterior rentgenographs. These predicate that it is useful and necessary to develop a 2-D modelling for the hip stress analysis. The validation of current modelling is verified by examining an example. In other words, the present modelling can be readily applied in clinical practice to estimate the peak stress in the most frequent body positions of everyday activities.

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