Going to see a 6 y/o this weekend with a tight rear tendon sheath. Seller says it’s manageable with steroid injections every 6 to 12 months, or there’s a surgery to resolve the issue. They don’t think she’ll hold up to a AA circuit H/J barn schedule, but a slightly lighter workload will be fine. The sale video I saw was made before the issue was discovered and the injection done and the pony is very, very slightly short / choppy behind. I don’t have the best eye for hind end lameness but I probably wouldn’t have caught it if I wasn’t looking for it.
My trainer says she’s seen enough pricey horses with this issue disclosed that she wouldn’t write the horse off. Pony is a cute 13.3h / 14h, so not a real division prospect, and would either hang out with me with a pretty chill schedule of hacking, trails and popping some jumps, or be sold on to a lower-level home. Would love to hear any personal experiences with this as I haven’t encountered it before!