I've had my left knee done twice the first time I was off work for six weeks it didn't help that 2 weeks after the op I walked into my dads capri and twisted the knee!
the op didn't really work the first time so 2 years later I went under the knife again, this time I was back at work in 2 weeks and have been fine since..
I reckon they left something in there the first time!! lol

steve