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Related Experiment Videos

[Comparative tridimensional mechanical study of external fixation devices. Clinical deductions]

J P Meyrueis1, A Masselot, J Meyrueis

  • 1Service de Santé des Armées et Chirurgien des Hôpitaux des Armées, Clinique Saint-Michel, Toulon.

Revue De Chirurgie Orthopedique Et Reparatrice De L'Appareil Moteur
|January 1, 1993
PubMed
Summary

The Ilizarov external fixator is unstable for open fractures, while Orthofix and French Army External Fixator (FESSA) offer stability. FESSA provides superior multidirectional dynamization and fragment fixation for epiphyseal fractures.

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Area of Science:

  • Orthopedics
  • Biomechanical Engineering
  • Trauma Surgery

Background:

  • External fixation devices are crucial for fracture management.
  • Comparing stabilization and dynamization capabilities of different external fixators is essential for optimal patient outcomes.
  • The Ilizarov, Orthofix, and French Army External Fixator (FESSA) are commonly used devices with distinct mechanical properties.

Purpose of the Study:

  • To conduct a tridimensional mechanical study comparing the stabilization provided by the Ilizarov, Orthofix, and FESSA external fixators.
  • To evaluate the suitability of each fixator for different fracture types, particularly open and diaphyseal fractures.
  • To assess the dynamization capabilities of the Orthofix and FESSA systems.

Main Methods:

  • A comparative mechanical study was performed on three external fixator systems.

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  • Analysis focused on the stability in multiple spatial planes and the degree of instability.
  • The study assessed the potential for reduction and dynamization in relation to fracture location (diaphyseal vs. epiphyseal).

    • Main Results:

    • The Ilizarov fixator exhibited significant instability in all planes except transverse movement, deeming it less suitable for open fractures in adults.
    • Both Orthofix and FESSA demonstrated stability, though Orthofix showed some transversal instability under compression.
    • FESSA offered greater versatility for epiphyseal fracture fixation and superior multidirectional dynamization compared to Orthofix.

    Conclusions:

    • The French Army External Fixator (FESSA) and Orthofix are more stable than the Ilizarov for fracture treatment.
    • FESSA provides enhanced fixation options for epiphyseal fractures and superior multidirectional dynamization.
    • The choice of external fixator should consider fracture type and desired mechanical control, with FESSA showing advantages in specific scenarios.