This is my first message on mumsnet, but hope that I can help. Not sure on the exact terminology, but both my sister and I were born with this condition (now aged 43 and 34 respectively).
My sister went undiagnosed until 18 months old, by which time she had just started to walk (had crawled by 10 months). She had to have a pin put in to keep her leg in place, and was in and out of plaster for around 18 months. However, it was a relatively new procedure at the time, so I'm sure that the timescales will have reduced by now.
My condition was spotted at 6 months. I also had a oddly positioned foot due to being squashed in the womb (9lb 15oz!) although talipes was not officially diagnosed, and even though my mum knew what to look for, she still didn't realise for those first few months, so please don't feel guilty! I just had a GA whilst they manipulated my leg back into the socket. I was in a plaster from ribs to ankles for about a month, then a "frog" plaster for the next 5 months. I was walking by around 15 months.
Both my sister and I had full mobility throughout our childhood and early adulthood. The bad news is that my sister developed arthritis and did need a hip replacement at 37, which we think was a result of the extra weight that she put on in her pregnancies. The consultant had warned about this at the time, but again, we don't know if this is because the procedure was "experimental" at the time.
I had my DD 9 months ago, so am keeping a close eye on my own hip (put 4 stone on during the pregnancy...) but so far all ok.
The good news is that neither my sister's 2 sons, nor my daughter have inherited the condition.
I know that it must be a really worrying time, and I'm sorry that I've had to tell you about my sister's hip replacement, but she is absolutely fine now (nearly 6 years on), and as she had it quite young, her recovery time was quick.
Let me know if there's anything else I can tell you.