Toward the end of the movie, when Gina comes in Tony Montana's (Al Pacino) office, she starts shooting at him, she shoots him in the leg, he grimaces in pain, but after that he never favors his leg at all!! its like it never happened...
Also notice that Tony didn't seem that bad off ten minutes later after he had been shot about ten times? He was so coked up, he wouldn't have even felt being shot, so as long as the bone wasn't broken, he could have walked around for those few minutes pretty well just goin' on coke and adrenaline.
The reason he did not give any more notice to the gun shot wound in his leg is the same reason he didn't give notcice to the massive amounts of gun shot wounds that he recieved in the raid, he was on lots of cocaine, numbing all feeling in his body, coke does that, so please remove that slip up, cause thats the situation the were trying to relay...