Anyone with experience? I am currently working with a vet.

Would just like to know if it is performance altering for anyone who has dealt with this. So far it I am seeing no pain, just a mechanical altering of stride but we are still in rehab mode after an injury.

For those with experience what did you do to work on the scar tissue? I've heard shockwave, thereapeutic shoeing practices (defintely)  and there is also surgery (not rec'd from my resesarch). Are there any best practices as far as performance?

Try to find a practitioner that can use a laser on the area. Then stretch and stretch. 

I have a 7 year old mare with one in her hamstring. She was not able to be handled when I bought her so I was unaware that she had it until a few months later. I’m not sure how old she was when it happened but it’s as hard as a rock. Two different performance vets have looked at her and basically consider it a nonissue. One vet said you could do surgery but it was a bloody mess and no guarantee it would heal back any differently. We run her with no issues, but when I first started hauling her people would stop me all the time and tell me she was limping. 

It shouldn't be a big deal for barrel racing.  If you were in a judged event where they had to jog for a judge, that would not be good.  It's a mechanical lameness which means it doesnt hurt, just makes their gait abnormal. 

I owned a mare at one time with it. She still clocked great. I didn't do anything for it, and she was barefoot