I've got a bit of tricky situation on my hands. Our warmblood mare is going on 19 years old. She's in great shape overall, but she has arthritis confirmed in her right front pastern and I'm suspecting she's starting to get some in her hocks based on how stiff she's been for the farrier lately. The problem is, she's still pretty hot-headed a lot of the time. Lately she's been such a ball of energy that I've had to longe her prior to every ride or else be bucked off / spend the whole ride shutting down her bolts and spooks.
I worry however that she's not "warming up" enough prior to pulling some of her shenanigans on the longe line. I'd hate to see her hurt herself or cause herself more discomfort because of her own craziness. I try hand walking her before putting her on the longe, but she's 16 hands of spunky to my 5'3" of attempted control. Not only that, but I know running too many circles can result in more strain on the horse's joints.
Any suggestions for taking some of the edge off of this golden oldie without compromising her health?