At 6:48pm this evening officers in District 4 responded to 130 Dartmouth Street for a pedestrian struck by a car. A 40-year-old male victim was found pinned under a taxicab with a severe leg injury. The victim was taken to an area hospital and was immediately taken into surgery. He is expected to survive. Preliminary investigation indicates that that the victim was involved in an argument with a passenger inside the cab and banging on the window of the cab. The cab driver exited his cab and confronted the victim and was assaulted. The cab driver entered his cab and drove towards the victim striking him in the leg. The cab driver, 52-year-old Aden Osman of Everett was arrested and charged with Assault and Battery by means of a Dangerous Weapon, Driving to Endanger and Reckless/Negligent Operation. He will be arraigned in Boston Municipal Court on Monday morning.