The unidentified man, from Yonkers, was riding the bike in the field behind a home in Chester Township when he lost control, crashing to the ground on Aug. 31 just after 6:30 p.m., Chester Police Chief Thomas Williver said.
The man suffered a large cut on his left thigh and could not be moved to the designated landing area for the helicopter, police said.
The landing zone for the Medevac -- a New Jersey State Police Jemstar -- was in turn switched to the same field where the man crashed, Williver said.
The victim was stabilized and flown to Morristown Medical Center, authorities said.
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