Yes, I was just going to say that, MF!
To add to what Anke said, I really struggled to check our ewes' feet by getting them to lift a leg. However, I found out that this is mainly because they don't want to be off-balance, so I've found a way now of getting them up against a wall and supporting their weight with my knee whilst I check them. Back legs are still a struggle (they hate that, and will try to kick), but for tame sheep, this works well for front feet.
BTW, Alamycin LA can apparently cause discolouration of the bones and teeth of lambs if it's given during pregnancy.