Traumatic Arthritis in both knees from US Marine Corps, 2 surgeries on right knee in 2005, 1st surgery on left caused a staph infection. Every other surgery to get the infection out, they caused another type of staph. Resulted in 5 types of staph and MRSA. San Francisco VA finally got rid of the infection, came back to Denver VA and they did a knee replacement which had failed within the 1st year because of poor quality. Ended up having 4 knee replacements all go bad within 6 years, which then resulted in an amputation of John’s left leg. He has had 23 surgeries on his left leg.