The Vacansoleil-DCM rider was the most seriously injured in mass pile up on the sixth stage to Metz. Poels, 24, suffered a ruptured kidney and spleen, a bruised lung and three broken ribs. He was in intensive care in hospitals in both France and the Netherlands.
Earlier this week, Poels underwent minor surgery to have a tube linking his left kidney and bladder.
"Today I am made wireless!" he joked on Twitter.
On Wednesday, he was once again able to train following a long recovery.
"I have long looked forward", Poels told De Telegraaf. "This is very nice." The Dutchman recognised however, that he has a long way to go.
"I am again very bottom of the ladder," he continued. "Step by step, my doctors say I can get back to my old level."
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He hopes to be back racing early next season.
"The Tour de France is in my mind. It would be nice to be able to participate at L'Alpe d'Huez."
