Which of the following best describes the primary mechanism by which highly cross-linked polyethylene (HXLPE) reduces wear rates in total hip arthroplasty compared to conventional ultra-high-molecular-weight polyethylene?
A
It decreases the size and number of free radical-induced chain scissions by creating strong intermolecular carbon-carbon bonds during irradiation.
B
It induces a heavily calcified boundary layer that deflects third-body debris from entering the joint space.
C
It dramatically increases the elasticity of the plastic, allowing it to stretch rather than shear under load.
D
It continuously secretes alpha-tocopherol (Vitamin E) into the synovial fluid to lubricate the metal trunnion.