April 20, 1955|
|Height||5 ft 10 in (178 cm)|
|Weight||178 lb (81 kg; 12 st 10 lb)|
Hietanen played most of his career with HPK, playing from 1973 to 1985 and from 1986 to 1987. Having played mostly in the 1. Divisioona, the team were promoted to the SM-liiga in 1983. Hietanen played 33 games during the 1983-84 SM-liiga season and notched up three assists. It would be his only season in Finland's top-tier league as HPK were relegated straight back to the 1. Divisioona.
In 1985, Hietanen joined Ketterä for one season before returning to HPK the following year in his last season before retiring. HPK have retired the number 17 in Hietanen's honour.
- Biographical information and career statistics from Eliteprospects.com, or Eurohockey.com, or The Internet Hockey Database