A tool for placing or removing joint sockets of an artificial joint, especially a hip joint, and a tool for placing or removing an artificial joint, has a handle, a joint socket or joint receiver or holder, and a connecting element arranged between the handle and the joint socket or joint holder. The connecting element comprises an arcuate portion in its longitudinal direction. A system for placing and removing joint sockets or joints using such a tool includes a position-determining and navigation device.
