European Spine Journal

, Volume 8, Issue 5, pp 354–359

Loads on internal spinal fixators measured in different body positions

Authors

  • A. Rohlmann
    • Oskar-Helene-Heim, Biomechanics Laboratory, Clayallee 229, D-14195 Berlin, Germany e-mail: rohlmann@biomechanik.de, Tel.: +49-30-81 004 274, Fax: +49-30-81 004 275
  • G. Bergmann
    • Oskar-Helene-Heim, Biomechanics Laboratory, Clayallee 229, D-14195 Berlin, Germany e-mail: rohlmann@biomechanik.de, Tel.: +49-30-81 004 274, Fax: +49-30-81 004 275
  • F. Graichen
    • Oskar-Helene-Heim, Biomechanics Laboratory, Clayallee 229, D-14195 Berlin, Germany e-mail: rohlmann@biomechanik.de, Tel.: +49-30-81 004 274, Fax: +49-30-81 004 275
SSE Basic Science Award 1999

DOI: 10.1007/s005860050187

Cite this article as:
Rohlmann, A., Bergmann, G. & Graichen, F. E Spine J (1999) 8: 354. doi:10.1007/s005860050187

Abstract

Telemeterized internal spinal fixation devices were implanted in ten patients. The loads acting on the fixators were compared for different body positions, including standing, sitting, and lying in a supine, prone, and lateral position. Implant loads differed considerably from patient to patient depending, for example, on the indication for surgery and the surgical procedure. They were altered by anterior interbody fusion. Mostly, only small differences in implant loads were found for the various lying positions. Flexion bending moments were significantly higher in upright than in lying body positions. Loads on the fixators were not higher for sitting than for standing. Patients who have undergone mono- or bisegmental spine stabilization should therefore be allowed to sit as soon as they can leave the bed.

Key words Internal spinal fixatorLoad measurementBody positionTelemetrySpine

Copyright information

© Springer-Verlag Berlin Heidelberg 1999