Evaluation on Cartilage Morphology after Intra-Articular Injection of Titanium Dioxide Nanoparticles in Rats

Figure 2

(a) the sketch of specially designed apparatus with five degree-of-freedom direction, (x, y, θx, θy, and θz) adjustment of articular cartilage surface perpendicular to the load probe (b) the six points on the superior load bearing aspect of the medial condyle and lateral condyle of distal femur, which is subjected to needle probe tests (c) the representative load-displacement curve.