Acceleration and holographic studies on different types of dynamization of external fixators of the bones

Halina Podbielska M.D.; Henryk T. Kasprzak; Arkady S. Voloshin; Dietmar Pennig; Gert von Bally

doi:10.1117/12.60202

1 August 1992 Acceleration and holographic studies on different types of dynamization of external fixators of the bones

Halina Podbielska M.D., Henryk T. Kasprzak, Arkady S. Voloshin, Dietmar Pennig, Gert von Bally

Proceedings Volume 1647, Holography, Interferometry, and Optical Pattern Recognition in Biomedicine II; (1992) https://doi.org/10.1117/12.60202
Event: OE/LASE '92, 1992, Los Angeles, CA, United States

Abstract

The unilateral axially dynamic fixator (Orthofix) was mounted on a sheep tibial shaft. Three fixation modes: static, dynamic controlled, and dynamic free were examined by means of double exposure holographic interferometry. Simultaneously, the acceleration was measured by an accelerometer and displayed on the monitor together with loading characteristics. The first exposure was made before the acting force was applied to the tibia plateau. The second one after the moment when the acceleration wave started to propagate through the specimen. We stated that in the case of dynamization less torsion occurs at the fracture site. So far, we have not been able to determine any correlation between results of holographic and accelerometric measurements.

Citation Download Citation

Halina Podbielska M.D., Henryk T. Kasprzak, Arkady S. Voloshin, Dietmar Pennig, and Gert von Bally "Acceleration and holographic studies on different types of dynamization of external fixators of the bones", Proc. SPIE 1647, Holography, Interferometry, and Optical Pattern Recognition in Biomedicine II, (1 August 1992); https://doi.org/10.1117/12.60202

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