He was born and died in Kotka.
Laitinen competed at the 1948 Summer Olympics in London where he received a gold medal in team combined exercises. At the 1952 Summer Olympics in Helsinki he received a bronze medal in team combined exercises with the Finnish team.
- "1948 Summer Olympics – London, United Kingdom – Gymnastics" databaseOlympics.com (Retrieved on April 3, 2008)
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