 He finished his career at a relatively young age because of a persistent ankle injury, and because of this, he ended up concentrating more on his studies.Aaltonen studied throughout his playing career, and after he retired from football, he earned a doctorate degree in economics.Aaltonen is best remembered for a goal scored against Italian goalkeeper Walter Zenga in UEFA Cup in 1987 during a match between Turun Palloseura and Inter Milan at the San Siro stadium in Milan.