I’ve learned so much from these threads, especially over the last year as I’ve had setback after setback with my wonderful mare, So to start: 10 yo KWPN I’ve had her since she was five. Last summer we earned our bronze medal, She is my love, and I absolutely adore her. Late last summer, she also developed a weird swelling in her left front fetlock, no heat, no soreness. Through the fall she was perfectly sound but every once in awhile, she would take a funny step, changing direction. As we got to December, this got worse, so I contacted my local vet who blocked to her fetlock and suggested an MRI. MRI revealed synovial herniation, slight suspensory desmitis. Surgeon recommended surgery. He removed a fairly large ’ ganglion cyst’ and was pretty sure that was the cause of the front left lameness. She came home and started rehab…hand walking to tack walking etc. She handled it all like the princess she is and she was perfect.
Fast forward to March, 2 months out from surgery, the sport horse vet pays a visit to take a look (it’s so much easier when they come to you:)). She looks awful, still completely lame on the left front. Decide to do PRP on the fetlock and see if that can provide some relief. It doesn’t help, so we decide on a bone scan. The bone scan is pretty inconclusive, blocking and imaging don’t give any definite answers but based on what we see in the ridden exam we decide to inject her neck. This seems to give some relief when we get back to tack/hand walking but she is still off the LF. Should also mention both fronts ultrasounded with no findings.
Then we get to May. Sport horse vet back to the barn and she’s actually looking ok. Not perfect. The more she works during the exam, the better she gets. Vet recommends putting her back into ‘get into shape work’. Some days are better than others, and then we have a brief time where things feel pretty darn good…THEN she starts to look off on the RF. UGH! Sporthorse vet out; she looks terrible. He recommends getting another horse. Well that’s not going to happen so decide to MRI the RF.
RF MRI is inconclusive. But she does have elevated insulin levels. When she is at the clinic she is managed as IR and loses quite a bit of weight—all for the good. All of this of course is a big UGH! The vet from the clinic where we had the bone scan and the RF MRI comes up for a ridden lameness exam. The high 4 block makes her completely sound. After this… ultrasounded all 4 legs, spine, SI, neck with nothing jumping out. What did jump out was her extreme sensitivity to palpations.
Decided to do a muscle biopsy for PSSM. Positive for PSSM2 and still waiting on the genetic PSSM1 test results. Without going into a ton of detail, this does explain so many things about her over the whole time I’ve had her. She is now currently on soaked hay, low NSC feed etc. I also added a tri amino but waiting on full management instructions.
In the meantime, I am tack walking and trotting her a tiny bit 6 days a week. She is still short/gimpy on that RF, especially tracking left, and that has everyone, including the very good and renowned lameness vet, completely stumped. It does get a bit better but is not perfect after some warmup and time, which tracks with the PSSM diagnosis. I know this all sounds nuts, and probably all over the place, and I’ve probably missed a few key details, but it has been a very thorough and systematic progression, so please feel free to ask further questions. Thoughts are welcome, and I know you’ll want video, but I am hesitant. Anyway, Thanks in advance!!