I had anterior CS back in 1999-2000. There was a full tightness in the calves shortly after I'd start into my runs. My calves are quite large. I had the pressure test done to confirm the CS--I think my readings were in the mid-high 30s. Went with conservative treatment first--active release therapy. Spent lotsa money outta pocket for that, but it didnt get better.
Next option was surgery. I was too eager to continue running/training, but wanted to get rid of the problem. Didnt really think twice about surgery--made a quick decision to have it done. The surgery worked, and I was running again at 5 weeks. No real problems since, although there does seem to be some tightness again in the calves, similar to what i experienced before. Is it possible to have a relapse of CS? I dont worry about it, though, b/c im not running as much now as i was then.
Despite the surgery working, and my surgeon doing a good job (he's also done knee surgey on me), I do regret getting the surgery done b/c of "complications" related to suspected blood clots after surgery and incompetent doctors at the ER. Caused me ALOT of stress and if I had to do it all over again, I wouldve just cut back on my running and waited it out, instead of getting surgery and dealing with all the crap I went through.