Determination of Hip Joint Forces by means of Multi-body Simulation

摘要

The implantation of a hip prosthesis is an operation which is frequently performed due to advanced hip joint damage. The long-term result of a hip prosthesis is mainly determined by aseptic loosening. Abrasion particles of the tribological pairing contribute to loosening. To reduce wear and to improve tribological pairings in hip prostheses, the load distribution during different motions has to be determined. A multi-body model of a human male was generated to calculate hip joint forces during walking. The height and weight of the model was based on a male patient presented by Bergmann et al. after implantation of a telemetric hip prosthesis. Parametric splines were developed governing segment motion in walking which can be transferred to any walking model. By means of the multi-body simulation model forces in the hip joint during different activities of daily life can be calculated.