Hi Tanza, Taco was just under 4 months old when it happened. The surgeon said that damage to the growth plate would only occur if the pin went through the plate, which post-op x-rays showed they did not. Though as I said above, she did suggest that a damaged growth plate may nonetheless be the cause of his limp. It's hard to tell without further x-rays, something we may do down the track.
Since writing the above I have noticed small improvements in Taco, I guess he's having a final growth spurt (being >8 months old now). Whether he gets to a stage where he has no limp or not, I guess only time will tell. But I think his foot is improving as is his shoulder musculature - his foreleg particularly has a lot of catching up to do compared to his other one, so I hold out hope he'll continue to build up and tighten up his foot.
Yesterday at the dog park he kept pace with an Italian Greyhound for a few short bursts, so I guess he's not too invalid.
Edit: I just had a look at your website, it looks like Maggii has no lasting damage either! Beautiful girl