Subluxations commonly cause back sensitivity in your horse. The saddle may have caused this or aggravated it. Even your posture on the horse could be a cause. Once I totally evaluate your horse, saddle and you we can come up with a plan to correct the problem.
As a certified animal chiropractor and instructor at Options for Animals Chiropractic College I am well qualified to evaluate your horse. I also ride so I do understand the issues.
Please call me at 781-337-1180 or email me at indekchiropractic@gmail.com
