After a week of disrupted preparation for the Swede, winner at Troon two years ago, he finished down the field on one over par.
Stenson, who missed last week’s Scottish Open, admitted he probably would not have played this week either had it been a regular tour event.
The 42-year-old said: “Obviously, the lack of preparation and practice was always going to affect the result to a very high degree this week.
“I feel like where I’m at today with the practice and links preparation and everything, that’s where I should have been Sunday of the Scottish, and I would have had a whole week of ahead of me.
“If it had been any other tournament, anything other than a major, I don’t think I would have teed it off this week.
“But it is what it is. Sometimes those things happen, and you’ve just got to make the best of it and move on.”
Stenson, who revealed he suffered the injury by banging his arm on a door, at least signed off at Carnoustie with a his best round of the week, a two-under-par 69.
Currently well outside the Ryder Cup standings, however, he has much to do in the coming weeks to try to secure automatic selection for the European team for this autumn’s clash in Paris.
He said: “I’m hoping the arm will clear up in a week or so and I can get back into playing without thinking about that and just working on my game, and hopefully I can find some form.”
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