Media type: E-Article Title: The Classic : The Halo : The Halo Contributor: NICKEL, VERNON L.; PERRY, JACQUELIN; GARRETT, ALICE; HEPPENSTALL, MALCOLM imprint: Ovid Technologies (Wolters Kluwer Health), 1989 Published in: Clinical Orthopaedics and Related Research Language: English DOI: 10.1097/00003086-198902000-00002 ISSN: 0009-921X Origination: Footnote: Access State: Open Access