See Ohio Valley Constr. Viewed in the light most favorable to Hunt, see R.G. Moore Bldg. All of those restrictions were caused by Hunt's work-related injury. In August of 1994, Dr. Cohn removed the restrictions on prolonged walking and standing. Interpreting Dr. Cohn's explanation of the restrictions, the commission found that because Hunt's standing restriction in 1995 was not based solely on his arthritis, a portion of that restriction resulted from Hunt's work-related injury, which was the only other source of his knee disability.
Credible evidence supports that factual finding.
11 Va. App. The commission's interpretation of Dr. Cohn's 1995 report was made within the context of Hunt's medical history and Hunt's testimony that, apart from his work-related injury and his arthritis, he had no other physical ailments that contributed to the problems with his knee. Credible evidence proved that Hunt's only other disability to that same knee was a work-related injury. Accordingly, we hold that the commission's finding is supported by credible evidence. Thus, the evidence proved Hunt's disability to the knee resulted from two causes.