Phuket Governor Tri Augkaradacha and Phuket Provincial Administrative Organisation President Paiboon Upatising were at the administrative organisation's hospital in Phuket City to see him into an ambulance bound for Phuket International Airport.
Khun Austapong will spend more time in a Bangkok hospital recovering from his injuries.
His friend Sitipong Laputama, 18, was killed when their motorcycle crashed off Sai Yuan Road in Rawai on Thursday.
The boys had gone to a 7-Eleven store and were returning to the lagoon at Nai Harn, where they were part of the rowing competition in the Phuket Games 2012, otherwise known as the 28th National Youth Games.
About 9500 young competitors and 2500 officials are on Phuket, some with their families, for events in about 40 sports. As of today Phuket was lying seventh among 77 provinces on the gold medal tally with 15 golds, 12 silver medals and 15 bronze medals.
Bangkok was not unexpectedly leading the medals tally, with 174 golds, silvers and bronzes.
The Phuket Games, which began on May 26, conclude with a closing ceremony at Surakul Stadium in Phuket City on Tuesday evening.