Which part is difficult to understand? They use medical and scientific terminology, but otherwise it's pretty straightforward. It essentially covers the usage

Which part is difficult to understand? They use medical and scientific terminology, but otherwise it's pretty straightforward. It essentially covers the usage of macropod (kangaroo, specifically, of an enumerated variety) tendon and ligaments in a grafting procedure using "undisclosed" materials for compatibility. It then enumerates specific elasticity parameters before giving a description of the problem (background). Basically, exactly what the topic article summarizes into layman.