Hard to Kill (1990)
Mason Storm, a 'go it alone' cop, is gunned down at home. The intruders kill his wife, and think they've killed both Mason and his son too. Mason is secretly taken to a hospital where he spends several years in a coma. His son meanwhile is growing up thinking his father is dead. When Mason wakes up, everyone is in danger - himself, his son, his best friend, his nurse - but most of all those who arranged for his death martial arts, coma, training, cop, revenge, vigilante, organized crime, mafia, undercover cop, hospital, gunfight, los angeles, california, one man army, one against many, urban setting, action hero, vigilante justice