We’re doing it all wrong. To effectively treat lameness conditions in sport and race horses we need a paradigm shift in how these animals are managed by horsemen and veterinarians. Attending the North American Veterinary Regenerative Medicine Conference here in Lexington last week underscored that belief. Here is the quick and dirty of what I learned at that meeting: Stem cells injected into a joint are not magically finding their way to areas where the cartilage is worn off, and planting themselves there to generate new cartilage. Bummer. I was really hoping there was some possibility here, after other (non-equine) studies showed that stem cells might “home” to injured tissue.