Finite Element Analysis of the Wrist Joint Affected by Rheumatoid Arthritis - Computational Biomechanics of the Wrist Joint - page 48

Fig. 5.8 The palmar view of the carpus where the RA bones were in red while transparent bones
depict the normal healthy wrist. The figure shows the translation of the lunate towards ulnar
direction resulting in the decreasing of the contact between the radius and the lunate

Fig. 5.9 The effect of bone erosion was shown in this exploded view of the RA model (left)

5.2 Finite Element Analysis: Pre-Processing Procedures

As aforementioned, the healthy model was used as control, and was compared with
the RA model created. Finite element analyses were occupied with the following
pre-processing procedures. For contact modelling, each of the contact body was
defined as deformable [ 19 ]. In total, there were 51 contact bodies in the healthy
model and 16 contact bodies in the RA model existed. Two different conditions
were set for the RA and the healthy models. For the healthy model, frictionless