 Monteggia was second to describe the Monteggia fracture, a fracture of the proximal third of the ulna with the dislocation of the head of radius.Monteggia was first to describe "Peroneal Tendon Subluxation", when he diagnosed this injury in a ballet dancer in 1803.It is when you have subluxation/dislocation of the peroneal tendons about the lateral malleolus.