Then I came in the afternoon to ride. I groomed and tacked, and as I was leading her to the indoor, she seemed a bit . . . short-strided. I got on and we did about 10 minutes of work at the walk - I figured she might be a bit sore and perhaps would warm up out of it. She seemed to be walking pretty well - I didn't detect any obvious "offness", and certainly no lameness . . . until we trotted. Stride - lurch - stride - lurch - we didn't take more steps than that as she was obviously quite lame, although she didn't show any reluctance to move up into the trot. It felt to me like she didn't want to push with the left hind, which was the stifle/gaskin the chiropractor had done a lot of work on. I suspect in the cavorting/hard work she did with my daughter that she tweaked something, probably the stifle again. There was no heat, swelling or tenderness in the legs anywhere that I found, so I gave her a gram of Bute and put her away.
She wasn't any worse and in fact may have been a bit better this morning, according to my daughter's report. She got her turnout - she doesn't run in turnout (usually), and I hand-walked her later in the indoor for about 10 minutes, and then for fun we did a bit of clicker/targeting work in her stall. She walked well, and got a bit looser as we went. The left hind was a bit stocked up above the pastern, but once again there was no heat or tenderness. Once again I gave her some Bute - with luck none tomorrow - I'm careful about Bute because of the potential for stomach irritation. I didn't trot her in hand - I may try that tomorrow if she's still good at the walk.
Maisie's always been a hard horse to get back into work after a layoff. She tends to be very forward at the best of times, and lungeing a horse with stifle issues to burn off energy isn't a very safe strategy. We'll continue working up to more in the indoor and drop the outdoor for now as it tends to excite her. More straight lines, more trotting, more trotting, more trotting, to muscle up those stifles - then if she cavorts, she should still be OK. I'm in no hurry.