The arrangement is for controlling the connection for a hearing aid (15) with a fixture (13) anchored in the skull bone. A control arm (1) extends from a connector (17), disposed between the hearing aid (15) and an abutment (9), to a handle (3) disposed at a side of the hearing aid (15) where the handle (3) is reachable by a patient. Biasing means provides a biasing force for biasing the control arm towards the connector (17). The control arm (1) is in operative engagement with the biasing means and movable in a direction to counter-act the biasing force of the biasing means to release the abutment (9) from the connector (17).