The present invention regards an elbow spacer device, including: at least one ulnar section, including a stem portion extending along a substantially longitudinal axis (x-x) between a proximal end and a distal end; at least one humeral section, including a stem portion extending along a substantially longitudinal axis (y-y) between a proximal end and a distal end, the distal end of the humeral section delimiting an engagement seat with the proximal end of the ulnar section; articulation means between the distal end of the humeral section and the proximal end of the ulnar section, positionable along an axis (z-z) that is orthogonal to the substantially longitudinal axis (y-y) of the humeral section. The proximal end of the ulnar section is engageable in the housing seat.