I am a bit of a long time lurker, but I am not finding anything exactly similar to my horses situation, so I figured it was time to post and get some feedback. This is about my 14 year old gelding I purchased in August of 2017. My gelding has some on again and off again lameness in his right front hoof which started early winter. From August through November he never took a lame step, and he was worked consistently. He had been in a solid work program prior to that (low level dressage/ranch horse versatility stuff). He was shod in the front, but with the winters we get here, we pulled his shoes in October. Owners said they never had an issue with him barefoot. November, farrier comes out and does a trim. A week after November trim, he goes lame suddenly while doing a bit of trot work in the indoor arena. About a grade 1. I treat this with cold hose, poultice, and bute, stall rest. There is no heat or swelling, tendon is cold and tight. I even try soaking the hoof and magic cushion. No improvement. I take him to my vet 6 days later. He takes x-rays, finds nothing. Diagnoses with a possible bad step or sprain. Stall rest another week and see how he does. Horse comes back fully sound within 2 weeks we are slowly back to work again. Farrier comes back out early February. 3 days after trim.. guess what? Take horse to indoor, after about 15 minutes walk/trot, he suddenly goes lame again. Grade 1-2. ARG. Of course. I’m an idiot. I have had this farrier for a few years, and was so loyal I was looking past some recent laziness. SO I stall rest again, and bute. I again take the horse up to the vet because I wanted to make sure I didn’t do more damage. Vet spends 2 hours with horse trying to pinpoint what was going on. Take more x-rays, ultrasound the tendon, flexion tests, hoof testers.. and he can’t find anything specific. Decides to try blocking starting in the coffin joint, and see what happens. Vet checks the joint fluid in the coffin joint before injecting, looks great, so vet says he doubts anything is wrong there. HOWEVER, only 5 minutes after the block, horse walks off sound. Vet diagnosis was inflammation around the coffin joint. Vet recommends we try a treatment called ProStride, which I understand is a form of IRAP/PRP, instead of doing the steroid coffin joint injections. I have had PRP performed on a different horse with tendon lesions, and we had amazing results. Vet says my gelding can be turned out in our small paddocks for now. That was 2 weeks ago. In the meantime, I had a new farrier come out and completely rebalance the horses feet. Within a day he was much more sound. As of this weekend we could not see any lameness. Then yesterday, the ground re-froze (we still have snow and ice here!), and he is again lame. After the Pro-Stride treatment we are thinking of putting the horse back in shoes with pads as well. I am reading up on barefoot trims, but I don’t know if that would help this horse. I am very hopeful for this ProStride treatment. Has anyone else had it done? I keep wondering if I’m dealing with collateral ligament or DDFT issues too. I do not have the money to get an MRI currently, but I know if this doesn’t work that would probably be the next step. Anyone have similar experiences? X-rays from early Feb. attached below. Thank you!