Thought that I'd post an update for those interested.
I am 9 weeks after the surgery. As far as the hip goes, I'm feeling great - I can walk around without limitations and use the elliptical without pain, though I am not cleared for more intensive activity like running as of yet. Hip PT is going well and working on strengthening core and gluteal muscles.
Unfortunately, there has not yet been significant progress on the pudendal symptoms. Interestingly, though over the last several years the symptoms have been associated with tenderness and pain immediately to the left of the coccyx, this has dissipated after surgery: instead there are now some tender areas in the muscles towards the front that did not exist before. The intensity/nature of the nerve symptoms themselves is roughly the same - mostly on the left, tingling/burning, aggravated by sitting, and altered sensation in the distribution of the PN, especially after prolonged sitting.
I also had anther 3T MRI done (not with Potter but at a different NYC facility, last one was in 2014)and it showed "mild asymmetry of the pudendal nerves with minimal increased size on the left as compared to the right, with minimal increased signal" -- basically consistent with the prior MRI, except that that one had shown bilateral irritation. The reason I got it is because upon internal physical therapy, the therapist had found a small "lump" on the left side of the sacrum, and we wanted to make sure that it was nothing serious. Thankfully, that looks like it's just a normal anatomical deviation.
My next steps (in addition to waiting and hoping for improvements) is to potentially start a Restorative Exercise program with David McCoid from "Freedom from Pelvic Pain" via Skype. I also happen to be going to France to visit friends and for tourism purposes, and thought that as I was "in the neighborhood", I would stop in for a diagnostic from Dr. DeBisschop in Aubagne (near Marseilles). I know he worked with Dr. Bautrant in Aix-en-Provence and now has his own facility where he practices a supposedly minimally invasive decompression with a "balloon probe" and is the author of numerous of the articles on PN diagnosis linked to on this website. He does sacral reflexes and doppler ultrasonography, which are not techniques which are used in the USA for diagnosis, as far as I am aware. I feel that with this condition, the more diagnostic specificity the better, and the MRIs' explanations of "your nerve is mildly inflamed without any apparent reason" is not exactly convincing. I'd also like to learn about the balloon method, which seems to be the least invasive of the surgical methods out there and does not resect any ligaments, though I am also skeptical about it because it is essentially "blind" and does not allow visualization of the nerve. I am not considering it for right now, as I must give both the recovery from the hip arthroscopy time to run its course and exhaust all possible non-invasive methods, but if I'm in the same or worse situation one year down the line, it might be an option.
Has anybody interacted with Dr. DeBisschop in any capacity?