I don't believe / trust Chiros.
The one I go to in Berkley has fixed me up several times from an inability to walk, much less get up off the floor. It's all mostly muscle spasms from the alignment issues a month or so out of a high force crash, but the alignment changes me world (for the better). Elbows out too. All the time....and I've crashed a lot. Like a a lot, lot. Things get jammed up if I don't get them fixed.
FWIW, the Chiro I go to doesn't do lots of actually "cracking". Instead, he pushes, manipulates, etc. It's a very different methodology to traditional Chiro and it works. His specialty is accident reconstruction. I've sent several friends and even my dad (who's been anti Chiro his whole life). No one has come out feeling they wasted money or were at risk of worse injury.
I'm biased because traditional Chiro's have fucked me up in the past...but this guy gets me walking and strutting again in a few days or less. The triple digit speed crashes really savage our bodies. I think it's possible you've got an alignment issue causing your finger issue.
Oh, one story: recently had a crash where I got pretty well jacked up and had a hand issue with numbness and fingers that lost feeling slowly until I couldn't feel my thumb and index finger almost completely. Went to my GP and he looked at it for a few seconds and explained I needed carpal surgery. Went to the same Chiro who adjusted my elbow/ shoulder and thumb. A week later it was gone.
Most Chiro's aren't impressive, IMO. But as much as much as I take body shots (at least over 50 crashes @ speed), the one I go to is excellent and puts my Humpty dumpty shell back together all the tme. I'd really try that first before any surgery or more extreme measures. If it doesn't work with him, I'll cover half the cost of the visit, Jordan.
There are two primary causes of cramps:
1. Low electrolytes
2. Pushing tissues past their limit into fatigue states. If your Hip Flexors are giving you problems, you'd want to work on them, the best being a lot of high knees running or in place. The hip flexor is actually a collection of muscles, primary of them is psoas major and minor.
I think there's something going on with the tightness of the bands that runs down the inside of the pelvis. Lots of tightness there that gets worse when riding with high pegs on rear sets. They can get tight enough to pull my pelvis out of position at times and I've found that actively stretching those areas limits the negative effects.