I have a welsh/percheron gelding 13 years old 15.1, 1500lbs. He was off and on lame left front 6 months ago, grade 1 on circle only, negative to hoof testers and flexion, vet thought mild sprain somewhere low and ordered 2 weeks rest w/ bute and slow return to work.
Went back to work and was fine for several weeks, then lame again. Was off and on for about a week. Great one day, then lame the next. Grade 2 on circle and straight, still negative to hoof testers but did block out well with first and lowest block (foot and heel).
MRI done 4 1/2 months ago now showed inflammation of medial collateral ligament of coffin joint and small amount of fluid around deep digital flexor tendon. No lesions were seen. Treated w/ 3 rounds each of IRAP (injected into coffin joint) and shock wave, rest, then sent to rehab for swimming 6 weeks ago and they began under saddle walking last two weeks.
Came home last week looking good, began some trotting (5 min each way) and felt fine. Had been doing this along w/ 20 minute walking for 7 rides and went to recheck exam today where he lunged grade 1 lame to the left. Seems we're in the same place we started. Not sure where to go from here????
I can turn him out for a year, send him to a theraputic riding center where they only walk, keep ride-walking and recheck? It just seems that he may not get better if he hasn't changed much yet
Re-do nerve blocks, flexions, radiographs, ultrasound and MRI to see if its the same thing or something new. I wouldn't turn him out for a year, I made that mistake with my horse and I regret it to this day. Go off of what the new diagnostics find.
You may need to inject to take out the inflammation and then go back to a month of stall rest then month of stall rest with tack walking before starting your trot again. Also may want new radiographs to see if any arthritis is starting in the coffin joint.
Recheck exam implies a vet was there. Did they have any suggestions. There was a point in Star's rehab for the collateral ligament strain (see link to blog below in signature) when he was very slightly off for a vet check. I'm not sure but it may have been during the trotting. The vet advised me to continue with what I was doing but call her back if it got at all worse or didn't go away within a few days. At least that's what I remember. Good luck.