A set of modular components to selectively form an elbow prosthesis having an unlinked configuration or a linked configuration, said set of modular components comprising: a humeral stem component having a distal end and a proximal end; a humeral condyle component having a distal end and a proximal end, the proximal end of the humeral condyle component being adapted to attachably engage the distal end of the humeral stem component, the distal end of the humeral condyle component including distally extending portions (18M; 18L); an ulnar stem component having a distal end and a proximal end; and a set of ulnar bearing components (5a; 5b) each being adapted to attachably engage the proximal end of the ulnar stem component and engage the distally extending portions (18M; 18L) of the humeral condyle component to selectively define an unlinked configuration of the humeral condyle component relative to the ulnar bearing component or a linked configuration of the humeral condyle component relative to the ulnar bearing component; wherein an ulnar bearing component includes a post and a further ulnar bearing component is suitable to be engaged with a linked ulnar bearing housing having a post, wherein the post (30; 37) is disposed, both in the unlinked and in the linked configuration, between the distally extending portions (18M; 18L) of the humeral condyle component and is configured to provide medial-lateral stability of the unlinked or linked elbow prosthesis, wherein the distal end of the humeral condyle component is formed of two distally extending portions (18M; 18L), each distally extending portion having a hole extending therethrough, further wherein the holes of the distally extending portions (18M; 18L) removably receive at least one of: a pair of bushing hole caps when the humeral condyle component is in an unlinked configuration relative to the ulnar bearing component; and a pair of humeral bushing members (3b; 3c) that are configured to receive an axle that passes through the bushing members (3b; 3c) and through the post of the ulnar bearing housing when the humeral condyle component is in a linked configuration relative to the ulnar bearing component. a humeral stem component having a distal end and a proximal end; a humeral condyle component having a distal end and a proximal end, the proximal end of the humeral condyle component being adapted to attachably engage the distal end of the humeral stem component, the distal end of the humeral condyle component including distally extending portions (18M; 18L); an ulnar stem component having a distal end and a proximal end; and a set of ulnar bearing components (5a; 5b) each being adapted to attachably engage the proximal end of the ulnar stem component and engage the distally extending portions (18M; 18L) of the humeral condyle component to selectively define an unlinked configuration of the humeral condyle component relative to the ulnar bearing component or a linked configuration of the humeral condyle component relative to the ulnar bearing component; wherein an ulnar bearing component includes a post and a further ulnar bearing component is suitable to be engaged with a linked ulnar bearing housing having a post, wherein the post (30; 37) is disposed, both in the unlinked and in the linked configuration, between the distally extending portions (18M; 18L) of the humeral condyle component and is configured to provide medial-lateral stability of the unlinked or linked elbow prosthesis, wherein the distal end of the humeral condyle component is formed of two distally extending portions (18M; 18L), each distally extending portion having a hole extending therethrough, further wherein the holes of the distally extending portions (18M; 18L) removably receive at least one of: a pair of bushing hole caps when the humeral condyle component is in an unlinked configuration relative to the ulnar bearing component; and a pair of humeral bushing members (3b; 3c) that are configured to receive an axle that passes through the bushing members (3b; 3c) and through the post of the ulnar bearing housing when the humeral condyle component is in a linked configuration relative to the ulnar bearing component.