Former Golden Boot Award winner and Brazillian soccer star Ronaldo has his tendon ruptured and has successfully undergone a surgery on his left knee. The future of this Milan Striker, wether his professional carrer is going to end here, is still a doubt. It is said that Ronaldo is long way from his recovery which will take place at least 9 to 12 months later. The 31 year-old badly injured himself during a 1-1 draw against Livorno and it was only his sixth game of the season. Ronaldo's contract with AC Milan would be renewed only if he regains his health and fitness. More about Ronaldo's injury at yahoo sports.