Vikings’ John Sullivan out 3-4 months after microfracture surgery

Vikings center John Sullivan will spent the next three or four months rehabilitating after knee surgery. Tom Pelissero of 1500 ESPN reports that Sullivan underwent microfracture surgery on his left knee last week. Dr. James Andrews performed the surgery, which will likely require 3-4 months of rehab. Microfracture surgery, which creates tiny fractures in the…