hmmm. I don’t know how big your spur is, or if it’s impinging the joints flexion…but something about the stumbeling you describe seems…I dunno, I’d want to rule out something else going on. Lyme comes to mind.
I am in very similar situation. My horse had a fall this summer. Was fine. Then a bump showed up on knee but he was sound and he was slightly swinging leg off—very slightly. Xrays showed spur coming off side of…one of those cubes of bone in the knee. 3 vets said—it was kinda “normal” arthritis. Normal spur formation that can just happen with age and time. 3 vets said they didn’t think it should bother him much.
I did hosing, clay poulticing, Surpass, DMSO till blue in the face. Bump is nice and cold, not warm or any bigger. But still had slight swinging leg off.
emailed one of the vets, he said he really thought the prob would be soft tissue somewhere else. That he didn’t think this spur should be causing the prob.
Taking a broader view after that email…holy @#$% I found a muscle in spasm just behind the shoulder…thumping away. Sore and trigger-y back muscles as well. Did 10 days Robaaxin and seemed like maybe that was the culprit, he got better. Then…he got a hoof abscess on a hind…some horses are sensible and say ow, my hoof hurts real bad, I’ll just stand hear misserable till the darn thing lets go. My horse is not like that…my horse puts weight on ow abscess hoof and flies into a fit of temper rearing and bucking on 3 legs, running on 3 legs, slipping and spinning on stall mats 3 legs…putting a lot of strain on the muscles spasm shoulder and back we’d only recently calmed down ;0( Big suprise his entire back had muscles spasms and the one in the shoulder came back too.
So…I’ at a place where I have no idea which came first, what caused what, I have a bump on a knee, whole bunch of muscle spasms and a NQR LF shoulder swing. I just drew blood for a Lyme to rule it out—he had some nasty tick bites recently.