Contact Pressure Analysis of Dual Mobility Cup for Asians on Various Head-To-Liner Ratios

Everyone agrees that there must be some contact for wear, and extreme contact pressuresPressure beyond the yield limit will cause overload damage, making material failure worse. But different pieces of evidence have led to different conclusions for the middle range of contact pressuresPressure. Even though there are advanced modeling techniques, many researchers still do not know about contact pressurePressure, especially when it comes to metal-on-polyethylene articulations on dual-mobilityMobility cups. This study used finite element analysis to aim at contact pressurePressure on some small femoral head diameters paired with different thicknesses of the polyethylene liner on dual mobilityMobility cups for Asians. During the normal gait cycle, contact pressurePressure analysis was done at each head-to-liner ratio. The research results can be used to determine the best head size and the inner liner’s thickness.