I found this forum on my search for information about Epiphysitis.
A bit of 'history' - I'll try to keep it short:
On Friday (September 24th) when we got the horses in from the pasture, I noticed that my 5 month old filly had VERY upright pasterns on her hind legs (left side worse than right). They were not swollen, just 'off' and she was not lame.
On Saturday her hind left fetlock was buckling forward a bit in the evening and when she walked, it 'hickuped' a bit... not sure how to explain but you'll see in the attached video what I'm talking about.
So for the past 5 or 6 days it has been the same patern, she's completely good in the morning and you coudn't tell there's an issue, and she's bad every evening. Some days better than others.
Last night was the worst bout so far and I took some photos and a short video of her movement. Having said that, they came running home yesterday (about a quarter mile full gallopp) and she was sore 5 minutes after. About an hour later, it got better already and this morning she was ok again.
I contacted my vet on Tuesday and he just recommended to wean her right away and keep her on grass hay only with limited turn out (even keep in paddock if possible).
I have a good friend who's a vet tech and she suggested to have her vet-checked right away. I also talked to another good friend who is a breeder (for many years) and has dealt with such a case a few years ago and said the same as the vet; to just wean, cut back on protein intake and wait-and-see...
I'm worried about my 'baby' and somehow none of the aricles I found online are giving me any 'peace of mind'.
ETA: Her legs are perfectly fine from the day she was born, issues just started now. She is turned out with her mom and our other horses from 6:30 AM to 7PM and then on drylot over night with a flake of hay grass hay around 9 PM
No other feed is given to her but she is still nursing.
We are going to wean her on Saturday.
And here are the pictures... of course also a 'full body shot' so you can see why I love her so much
Any input is very welcome!