a shoulder prosthesis comprising a socket and a condyle that cooperates with the socket . the condyle also cooperates with a base plate facing the scapula similar to a clamping connection . the condyle is plugged onto the base plate by means of a receptacle that is embodied on the condyle . the base plate can be anchored to the glenoid fossa of the scapula with the aid of two peg - type protrusions .