At the 2010 Winter Olympics, he finished 36th both in the individual large and normal hill events.
Buse also won an individual normal hill event at Oberstdorf in 1977.
He competed in the large hill event at the 1964 Winter Olympics.
Kirjonen earned a total of three career victories, all in normal hill events (1955, 1957, 1961).
His best individual finish was 20th in the individual normal hill event at those same championships.
The ski jumping team normal hill event was not held, as it had been in 2005.
He also had three individual career victories from 1980 to 1986, all in individual large hill events.
In 1964 the competition would be expanded to include a men's large hill event.
The team large hill event was added in 1988.
The two reversed top places in the large hill event.
