Effects of intraarticular ropivacaine and morphine on lipopolysaccharide-induced synovitis in horses.

Objective: To compare the intraarticular (IA) analgesic effects of ropivacaine and morphine in horses with experimentally induced synovitis.

Study Design: Randomized, blinded cross-over design.

Animals: Twelve healthy mixed breed horses between 8-15 years old.