Strategies in Trauma and Limb Reconstruction

Register      Login

VOLUME 10 , ISSUE 1 ( April, 2015 ) > List of Articles

Original Article

Mechanical rigidity of the Ortho-SUV frame compared to the Ilizarov frame in the correction of femoral deformity

Petr V. Skomoroshko, Victor A. Vilensky, Ahmed I. Hammouda, Matt D. A. Fletcher, Leonid N. Solomin

Keywords : Osteotomy, Fracture, Biomechanical stability, External fixator, Hexapod, Rigidity of osteosynthesis

Citation Information : Skomoroshko PV, Vilensky VA, Hammouda AI, Fletcher MD, Solomin LN. Mechanical rigidity of the Ortho-SUV frame compared to the Ilizarov frame in the correction of femoral deformity. 2015; 10 (1):5-11.

DOI: 10.1007/s11751-015-0214-6

License: CC BY-NC-SA 4.0

Published Online: 01-06-2013

Copyright Statement:  Copyright © 2015; The Author(s).


Abstract

The Ortho-SUV frame (OSF) is a novel hexapod circular external fixator which draws upon the innovation of the Ilizarov method and the advantages of hexapod construction in the three-dimensional control of bone segments. Stability of fixation is critical to the success or failure of an external circular fixator for fracture or osteotomy healing. In vitro biomechanical modelling study was performed comparing the stability of the OSF under load in both original form and after dynamisation to the Ilizarov fixator in all zones of the femur utilising optimal frame configuration. A superior performance of the OSF in terms of resistance to deforming forces in both original and dynamised forms over that of the original Ilizarov fixator was found. The OSF shows higher rigidity than the Ilizarov in the control of forces acting upon the femur. This suggests better stabilisation of femoral fractures and osteotomies and thus improved healing with a reduced incidence of instability-related bone segment deformity, non-union and delayed union.


PDF Share
  1. Ilizarov GA (1988) The principles of the Ilizarov method. Bull Hosp Jt Dis Orthop Inst 48(1):1–11
  2. Sternick MB (2010) A história da fixaçãoexterna. In: Andrade MAP, Silva WN (eds) Clínicaortopédica da SBOT. Avançosemalongamento e reconstruçãoóssea. Guanabara Koogan, Rio de Janeiro, pp 98–103
  3. Manner HM, Huebl M, Radler C, Ganger R, Petje G, Grill F (2007) Accuracy of complex lower-limb deformity correction with external fixation: a comparison of the Taylor spatial frame with the Ilizarov ring fixator. J Child Orthop 1(1):55–61. doi:10.1007/s11832-006-0005-1
  4. Dammerer D, Kirschbichler K, Donnan L, Kaufmann G, Krismer M, Biedermann R (2011) Clinical value of the Taylor spatial frame: a comparison with the Ilizarov and Orthofix fixators. J Child Orthop 5(5):343–349 (Epub 2011 Aug 19)
  5. Solomin LN (2012) The basic principles of external skeletal fixation using the Ilizarov and other devices, 2nd edn. Springer, Stürtz GmbH, Würzburg
  6. Huiskes R, Chao EY (1986) Guidelines for external fixation frame rigidity and stresses. J Orthop Res 4(1):68–75
  7. Paley D (2011) History and science behind the six-axis correction external fixation devices in orthopaedic surgery. Oper Tech Orthop 21:125–128
  8. Paley D, Fleming B, Catagni M et al (1990) Mechanical evaluation of external fixators used in limb lengthening. Clin Orthop Relat Res 250:50–57
  9. Skomoroshko PV, Vilensky VA, Hammouda AI, Fletcher MDA, Solomin LN (2014) Determination of the maximal corrective ability and optimal placement of the Ortho-SUV frame for femoral deformity with respect to the soft tissue envelope, a biomechanical modelling study. Adv Orthop 2014:268567. doi:10.1155/2014/268567
  10. Solomin L, Kornilov N, Wolfson N, Kirienko A (2003) Importance of method of unified designation of external fixation. J Bone Joint Surg 86(Supplement III):300
  11. Andrianov MV (2000) Combined external fixation of femur shaft fractures and their consequences. Kand. Med. Nauk Thesis, Vreden Russian Research Institute of Traumatology and Orthopedics, St Petersburg, Russia 2000 (in Russian)
  12. Wu JJ, Shyr HS, Chao EY, Kelly PJ (1984) Comparison of osteotomy healing under external fixation devices with different stiffness characteristics. J Bone Joint Surg Am 66(8):1258–1264
  13. Williams EA, Rand JA, An KN, Chao EY, Kelly PJ (1987) The early healing of tibial osteotomies stabilized by one-plane or twoplane external fixation. J Bone Joint Surg Am 69(3):355–365
  14. Claes L, Blakytny R, Göckelmann M, Schoen M, Ignatius A, Willie B (2009) Early dynamization by reduced fixation stiffness does not improve fracture healing in a rat femoral osteotomy model. J Orthop Res 27(1):22–27. doi:10.1002/jor.20712
  15. Claes LE, Heigele CA, Neidlinger-Wilke C et al (1998) Effects of mechanical factors on the fracture healing process. Clin Orthop Relat Res 355(Suppl):132–147
  16. Chao EY, Aro HT, Lewallen DG, Kelly PJ (1989) The effect of rigidity on fracture healing in external fixation. Clin Orthop Relat Res 241:24–35
  17. Goodship AE, Watkins PE, Rigby HS et al (1993) The role of rigid frame stiffness in the control of fracture healing. An experimental study. J Biomech 26:1027–1035
  18. Kenwright J, Richardson JB, Cunningham JL et al (1991) Axial movement and tibial fractures. A controlled randomized trial of treatment. J Bone Joint Surg Br 73:654–659
  19. Gasser B, Boman B, Wyder D et al (1990) Stiffness characteristics of the circular Ilizarov device as opposed to conventional external fixators. J Biomech Eng 112:15–21
  20. Podolsky A, Chao EY (1993) Mechanical performance of Ilizarov circular external fixators in comparison with other external fixators. Clin Orthop Relat Res 293:61–70
  21. Yang L, Nayagam S, Saleh M (2003) Stiffness characteristics and inter-fragmentary displacements with different hybrid external fixators. Clin Biomech 18:166–172
  22. Baran O, Havitcioglu H, Tatari H, Cecen B (2008) The stiffness characteristics of hybrid Ilizarov fixators. J Biomech 41(14):2960–2963. doi:10.1016/j.jbiomech.2008.07.030
  23. Yilmaz E, Belhan O, Karakurt L, Arslan N, Serin E (2003) Mechanical performance of hybrid Ilizarov external fixator in comparison with Ilizarov circular external fixator. Clin Biomech 18(6):518–522
  24. Iobst C, Khoury A, Ingwer Z et al (2013) A Safe Technique for dynamizing the Taylor spatial frame. Poster presentation at the orthopedic research society annual meeting, Phoenix AZ, October 2013. http://www.hwbf.org/ota/am/ota13/otapo/OTP13125.htm. Accessed 14 Dec 2013
PDF Share
PDF Share

© Jaypee Brothers Medical Publishers (P) LTD.