In Dark Knight Rises, Bruce Wayne's doctor visit, in which the doctor lists off all the degenerative injuries to his body (lack of cartilage, scar tissue, etc ) and the use of a mechanical knee brace, are reminiscent of Mark Waid's Justice League novel Kingdom Come (set in a hypothetical future), where an older Bruce Wayne requires the use of an exoskeleton to move, due to years of physical wear and tear on his body.
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