Vorthoren made his debut in the
Eredivisie for
Willem II in the away-match against Feyenoord (0–2 loss) on 1 September 2007. In the home match against
NEC Nijmegen (3–0 win) he appeared in the starting line-up for the first time. He finished the season having played 19 Eredivisie games. The following season he played less, due to an injury. Although there had been rumours Vorthoren would play for
K.S.V. Roeselare (on loan) for the rest of the season, he stayed with Willem II. He moved to
FC Den Bosch at the start of the 2009–10 Eredivisie season. The season 2017 he will play for Norwegian
Start in
OBOS-ligaen. Vorthoren left
Sandnes Ulf at the end of 2018. On 12 April 2019, it was announced that Vorthoren would join
BVV Barendrecht from the 2019–20 season. He signed a one-year contract extension with the club in January 2020. ==International career==