A device for in situ milling of joint surfaces, including a milling device (20, 24) and a joint clamping device (10). The joint clamp device (10) is designed to be inserted between two joint components forming a joint, particularly bones (1, 3), and for pushing the joint components (1, 3) apart with a predetermined or adjustable tension, wherein the joint clamping device (10) includes a recess (11) in which the milling device (20, 24) can be inserted, wherein the milling device (20, 24) includes a face milling cutter (21).
