and or applying a force for instance by a hammer in a further step the socket part 2 is connected with the anchoring part 3 by inserting the pins 5 into the guides 8 the pins 5 are inserted into the guides 8 until a secure connection between the socket part 2 or the pins 5 and the anchoring part 3 or the guides 8 has been established when inserting the pins into the guides 8 they are drawn over the respective thickenings 12 of the connecting devices 4 on this occasion the thickening 12 click or snap into the openings 11 and thus create a secure meaning non easily releasable connection between the pins 5 and the guides 8 and therefore between the socket part 2 and the anchoring part 3 such an assembling of the socket part 2 and the anchoring part 3 can of course also be done outside a human or animal body the thickening 12 that has been clicked or snapped into the opening 11 prevents the pins 5 from being able to simply slip out of them again should the thickening 12 nevertheless for instance by a swinging motion be detached from the opening 11 the pins 5 will advantageously still be left inside the guides 8 and be held by these meaning that the connection of the socket part 2 with the anchoring part 3 is not completely released and remains repairable a renewed secure connection can be achieved in a simple manner by pressing the socket.