I realise i'm a bit late with this, but I thought i'd write it anyway in case anyone else sticks Hip Arthroscopy into the search tool.
In 2007 (aged 28) I was a keen footballer and runner, but noticed what I thought was a slight groin strain before a match. Went through all the usual rest routine but it remained for three months so I went to the GP. Physio didn't fix it, after which I went through 18 months of misdirection and misdiagnosis from a host of physios, specialists, and orthopaedic surgeons.
During this time i kept running (they all said it was fine), despite the increasing pain i'd feel when I was doing it. Luckily a doctor friend of mine did a secondment in orthopaedics and got her boss to see me as a favour. One arthogram/x-ray later and i was diagnosed with FAI due to a bone growth on my femur and damage to the acetabulum.
The decision to have surgery was a no-brainer as I was in a lot of pain, my body was totally lopsided and I just wanted to get back to sport. I had the arthroscopy in Dec 2009 and began the recovery. Sadly my expectations were a little bit high, as the surgeon told me the damage to my cartilage in my hip was so bad that I would definitely get arthritis and need a hip replacement later in life. He advised me to give up football and running completely ( I was quite shocked at 30 years old) - I haven't kicked a ball since and limit my running to the very infrequent 30mins here and there.
To the point - I am still in pain all over my lower body (the body compensating for one injury causes another - knees, hip, groin, ankle, you name it). I can't run. I can't play football. I do maintain the subscription here to inspire me, and in all honesty I don't regret the operation - the damage was already done and i'm not in as much pain as prior to it. It was the two years of misdiagnosis that did for me I think.
I guess if I could give some advice from my disappointing experience it would be to value your rights as a patient above all else and don't be afraid to get second, or third opinions. I don't think FAI will just fix itself so this relatively fledging surgery may be the only solution at the moment.
I don't mean to be one of the "hard luck stories", and i'm sure a lot of people have positive outcomes. Sadly for me running is now a thing of the past and I'm stuck with volunteering at races to be part of the occasion these days