Introduction: The syndrome of low backache with or without neurological deficit is a common diagnostic problem, an orthopedic surgeon faces in daily practice. Such patients initially are treated conservatively with analgesics, short wave diathermy, tractions and exercises. Such patients attend the OPD with a variety of presentations and localization of lesion is too difficult at times. 1,2 Such...

A three-dimensional mixed variational principle is used to derive a Kth-order two-dimensional linear theory for an anisotropic homogeneous piezoelectric (PZT) plate. Themechanical displacements, the electric potential, the inplane components of the stress tensor, and the in-plane components of the electric displacement are expressed as a Ž nite series of orderK in the thickness coordinate by ta...

An extension to the interface finite element with eMbedded Profile for Joint Roughness (MPJR element) is herein proposed solving frictional contact problem between a rigid indenter of any complex shape and an elastic body under generic oblique load histories. The actual accounted as correction gap function. A regularised version Coulomb friction law employed modeling tangential response, while ...

We use the Airy stress function to derive exact solutions for plane strain deformations of a functionally graded (FG) hollow cylinder with the inner and the outer surfaces subjected to different boundary conditions, and the cylinder composed of an isotropic and incompressible linear elastic material. For the shear modulus given by either a power law or an exponential function of the radius r, w...

A parametric study is conducted to determine the effect of normal displacements due to shear tractions on the critical speed for frictionally-excited thermoelastic instability. The results show that shear effects can be very significant when the materials have comparable thermal properties and their neglect can lead to a non-conservative overestimate of critical speed. ft is also found that the...

This study aims to validate the accuracy of a cervical traction therapy simulation model by comparing the intervertebral separations of six asymptomatic male adults when traction was applied to their cervical spines. The subjects were tested on two mechanical traction devices, representing the inclined and sitting positions. A total of 55 radiographic images of their cervical spines were taken ...