The table provides a synopsis of the data of degenerative changes (points), heights and HL in the cartilage of the stifle joints from old and young pigs before and after tribological exposure and the friction forces.

For the medial and lateral compartments of the stifle joints the HL was calculated using the tribometer and the histologically measured changes of the cartilage heights. The radiological assessments were only made on the complete joints before the tribological exposure. “n”specifies the number of assessed specimens.