Lump and lameness on forelimb

[1alex1moose]

I have had a 12yr old 16h quite chunky TB x Cob on loan for the last year and he has been sound and healthy the whole time i've had him.
When i got him he had a lump about the size of a 10p or big marble on the inside of his near fore just above the fetlock towards the back of the leg (where you'd expect a windgall). It is hard to the touch (almost feels bony) and doesnt move about hardly at all if you poke it, whether the leg is bent or straight. It has never caused him a problem.
However due to some cr&p management by YO this week he was left out on his own and i think he has kicked it while hooning about. He is now lame in anything other than walk. Not massively - only a bit unlevel. It is tender to the touch as he will pull the leg up, but not hot or inflamed.
It's not a windgall - i wondered whether it's a cyst of some sort and giving it a thump has caused bruising - but in that case why no heat!
I'm stumped!! all advice welcome please!!

 

[zigzag]

Are you sure it is not a bony lump (like a splint) that he has fractured

 

[1alex1moose]

Def not a splint as far too low down the leg. If it was fractured i think it would be much more sore than it was.
The lump is still there but he's now sound so i guess i'll just have to forget about it for now!

 

[AmyMay]

Think that your vet is the best one for this.

 

[dwi]

You need to call your vet. Daisy managed to kick herself hooning about and it turned out she had torn her tendon sheath and allowed the fluid to drain into a cavity causing swelling. Needed treating. After the summer I've had my advice would be that you can't be too careful with legs