Joint implant

An artificial joint implant comprising a first element with a socket and a second element with a ball head, said socket being at least hemispherical and said ball head being inserted in said socket such as to form a ball-and-socket connection between said first element and said second element, movement of said ball head in said socket being restricted in at least one degree of freedom by means of an at least one protrusion engaged in an at least one groove, said at least one protrusion being provided on said socket and said at least one groove being provided on said ball head or vice versa, wherein said first element further comprises an inlay rotatably coupled to a base portion around a first axis of rotation, wherein said at least one protrusion and said at least one groove are arranged to block said at least one degree of freedom of said ball-and-socket connection around a second axis of rotation which is substantially parallel to the first axis of rotation.