The patient sustained injuries which are not life threatening but still required treatment in Southampton after the accident at Le Friquet.
An 18-year-old has been arrested in connection with the incident and released on bail.
Police want to hear from anyone who saw the collision or anything which led to it.
Anyone with information is asked to call PC Du Port or PC Simon on 222222 or Crimestoppers anonymously on 0800 555 111.
