I went to a doctor regarding my knee. She had read the xray's, and seen the arthritis (severe) in my knee, and opined that I would need a total knee replacement, the only question was when. So I asked her, "Do you think this is related to the fracture of my leg in service?"
She said "no". She then said something about some type of joint damage, saying some is related to an injury and other types of arthritis are not related to injury or fracture. While I dont remember EXACTLY what she said (the medical terminology), I knew that meant I would not be sc for my knee, "unless/until" I wen