This is something I was also wondering about... why IUI is not offered in the case of poor sperm (we have triple defect caused by a varicocele - awaiting specialist appointments to get it repaired). I've heard of several cases of IUI being used, but the majority of IVF clinic websites state that it won't be offered in the case of poor sperm.

I would have thought that just getting the sperm closer to where they have to be would help what sperm there actually are get to the right place, particularly if they don't swim that well... One would kinda assume that the fertility clinics know what they are doing, though.

BW