(1) The articular surfaces and biceps tendon attachment were found to be normal.(2) The articular cartilage that lines joints is tough and resilient.(3) Notice the head of the humerus has a much larger articular surface than the glenoid cavity.(4) New orthopedic options using autogenous tissue to repair articular cartilage defects of the knee are emerging.(5) This process puts greater stress on the articular cartilage of the vertebrae and their respective end plates.