What did Patrick swayzes Arabian tammen die of?

Patrick Swayze's Arabian horse, Tammen, died in 2008 due to complications related to a severe hoof injury. Tammen had a special bond with Swayze, who often spoke about the horse's importance in his life. After Swayze's passing in 2009, his wife, Lisa Niemi, mentioned that Tammen's death was a significant loss for her as well.