The diagnoses which claimant had were all diagnoses that could have been caused from other preexisting conditions or by other means, such as running or playing basketball, which were also included in reports from various physicians. The treating physician conceded in cross examination that he was only assuming the claimant’s condition was casually related due to the history provided, and then further conceded that there are many other explanations for which claimant could have these knee conditions which would NOT be work related. The IME doctor was able to maintain their position that the claim is not causally related.