title: Design and use of a plastic ball and socket stereotactic instrument for surgery of the brain.
mesh_terms: D001921:Brain / Q000601:surgery; D006801:Humans; D008722:Methods; D010969:Plastics; D011859:Radiography; D012886:Skull / Q000000981:diagnostic imaging; D013238:Stereotaxic Techniques / Q000295:instrumentation*
chemical_list: D010969:Plastics