caa a22 4500 469122838 CHVBK 20180323133143.0 cr unu---uuuuu 170328e19920901xx s 000 0 eng 10.1007/BF02368172 doi (NATIONALLICENCE)springer-10.1007/BF02368172 Hoffmann half-frame external fixation rigidity and its relationship to universal joint slippage [Elektronische Daten] [F. Drijber, J. Finlay] Hoffmann half-frame external fixation device configurations often fail under minimal loads secondary to joint slippage. In these experiments improved universal joints that were developed in an earlier study were tested on Hoffmann half-frame assemblies. The rigidity of selected half-frame configurations was tested in four modes (axial compression, torsion, medial-lateral and anterior-posterior four-point bending). These results were compared to those of an earlier, similar study looking at the standard Hoffmann half-frame. No changes in overall rigidity were noted, but significant increases in yield loads and loads to frame failure were achieved. Such improvements will increase the reliability and usefulness of the Hoffmann device to the orthopaedic community. Pergamon Press Ltd, 1992 Fixator nationallicence Frame rigidity nationallicence Joint slippage nationallicence Frame failure nationallicence Drijber F. Orthopaedic Research Laboratory University Hospital, University of Western Ontario, P.O. Box 5339, N6A 5A5, London, Ontario, Canada aut Finlay J. Orthopaedic Research Laboratory University Hospital, University of Western Ontario, P.O. Box 5339, N6A 5A5, London, Ontario, Canada aut Annals of Biomedical Engineering Kluwer Academic Publishers 20/5(1992-09-01), 533-545 0090-6964 20:5<533 1992 20 10439 https://doi.org/10.1007/BF02368172 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02368172 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Drijber F. Orthopaedic Research Laboratory University Hospital, University of Western Ontario, P.O. Box 5339, N6A 5A5, London, Ontario, Canada aut NATIONALLICENCE 700 1- Finlay J. Orthopaedic Research Laboratory University Hospital, University of Western Ontario, P.O. Box 5339, N6A 5A5, London, Ontario, Canada aut NATIONALLICENCE 773 0- Annals of Biomedical Engineering Kluwer Academic Publishers 20/5(1992-09-01), 533-545 0090-6964 20:5<533 1992 20 10439 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer