Stifle locking?

[ahlam1399]

Hi, I noticed today that my horse (he?s a 6yo warmblood) suddenly has what we?re pretty sure is a locking stifle on his left hind. We?ve texted our vet to ask his opinion. It has come on out of nowhere. We?re pretty sure he?s not lame in walk or trot. The times it ?locks? are usually when he turns in walk or first steps off. It?s also bad when you pick his leg up (e.g to pick his feet out), he stretches it straight out and then snaps it up very sharply and you can hear an audible click. He won?t let you hold it up. He?s also reluctant to let you hold the right one up too, because it bares weight onto the left. We?ve lunged him both in walk & trot on soft ground and he seemed sound. Anyone had an experiences? Will it just go away on its own? Thanks

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