Acting ambulance team manager Alana Reid said 350 skiers and snowboarders were treated from Coronet Peak and the Remarkables skifields and some from Cardrona if the injured party was based in Queenstown.
A third of transfers by St John Wakatipu ambulances to Dunedin and Invercargill hospitals were related to skifield injuries.
Other cases the Frankton-based team treated were caused by traffic accidents, alcohol related incidents, recreational activities, medical emergencies and slips on icy footpaths.
"More people in the district means more patients," Ms Reid said.
St John Wakatipu works with the Dunedin based Otago Rescue Helicopter Trust.
A total of 26 of the 350 skifield injuries involved a helicopter evacuation, down about 5% on last year, which was possibly due to how resources were split.
The total number of 1047 patients over winter was up from 890 last year and 860 in 2007.
How many of those winter injury totals were related to the slopes was unknown because recording methods had changed.
"It's because there are more people on the mountains. They've had a really good ski season," Ms Reid said.
"2007 was a relatively poor year."
Back injuries were the most common and ranged in severity from muscle strains to a visiting Australian snowboarder in his early 20s who was treated for paralysis from his chest down.
The outcome of his treatment was not known.
Ms Reid said other mountain injuries incuded fractures to the lower leg and wrist, shoulder dislocations, hypothermia and concussions.
"Congratulations to all those who wore helmets. It helps prevent head injury.
"Anecdotally, we've had very limited days when we've had snow and ice on the road, which means less traffic accident call-outs."
Ms Reid said alcohol-related call-outs were a small part of what the service did and the frequency was not as predictable as in other centres.
St John Wakatipu employed four extra full-time ambulance staff for the winter season, who will return to Dunedin.
Up to eight full-time ambulance officers remain.
"I think we were resourced appropriately and it will obviously be looked at again," Ms Reid said.
"In the future, there will be more full-time staff, depending on the rate of population growth, but I don't see that for 2010."
