On 1/10/08, 3:35pm, employee reported that his left knee was bothering him. He did not know how or when he hurt his knee, but it started bothering him when he was driving the forklift around 1:00pm the previous day. He wanted to give it a few days to see if it got better. On 1/15/08 he wanted to go to the doctor. The doctor's diagnosis was a sprained knee.