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2014, Number 2

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Rev Cubana Invest Bioméd 2014; 33 (2)

Comparison of pre- and postsurgical stress over a hip joint with dysplastic sequels

Bueno-Palomeque FL, Cortés-Rodríguez CJ, García-Sarmiento CD

Language: Spanish
References: 16
Page: 110-118
PDF size: 255.90 Kb.


ABSTRACT

Introduction: the treatment of residual hip dysplasia in young persons and adults requires surgery. Bearing in mind the future biomechanical behavior of the joint could be a useful tool in the planning and evaluation of the most appropriate surgical procedure.
Objective: compare the distribution of pre- and postsurgical stress over a hip joint with dysplastic sequels using the finite element method for its resolution.
Methods: use was made of a finite element model of a patient's hip joint with dysplastic sequels reconstructed from CT scan images, and a model of the joint relocation that simulated the surgical procedure performed. The maximum stress generated and the weight bearing area were estimated during the stance phase of the gait cycle.
Results: the load on the treated joint is excessive due to the reduced joint coverage. Simulations on the postsurgical model showed a 20.20% reduction in the maximum stress exerted on the femoral head at the point of greatest load during the gait (20% of the stance phase), a 49% reduction in the contact pressure over the joint cartilage, and a 64% increase in the weight bearing area at the same point.
Conclusions: the study revealed very considerable postsurgical biomechanical improvement in the amount of load borne by the joint. On the other hand, it allows a better view of the patient's reality and contributes to taking the best treatment decision.


REFERENCES

  1. Michaeli DA, Murphy SB,Hipp JA. Comparison of predicted and measured contact pressures in normal and dysplastic hips. Med Eng Phys. 1997;19(2):180-186.

  2. Murphy SB, Kijewski PK,Harless A. Acetabular dysplasia in the adolescent andyoung adult. Clin Orthop Relat Res. 1990;261:214-223.

  3. Crowninshield RD, Johnston RC, Andrews JG, Brand RA. A biomechanical investigation of the human hip.J Biomech.1978;11:75-85.

  4. Silva-Caicedo O, Garzón-Alvarado DA. Antecedentes, historia y pronóstico de la displasia del desarrollo de la cadera. Revista Cubana de Investigaciones Biomédicas. [Revista en Internet]. 2011 [Citado 18 Febrero 2013];30(1):141-162. Disponible en:http://scielo.sld.cu/pdf/ibi/v30n1/ibi10111.pdf

  5. Al-Chueyr T, Junqueira PH, Franco de Moraes T. Invesalius: Software de reconstrucción tridimensional. 2010 [Consultado diciembre 2012]. Disponible en: http://svn.softwarepublico.gov.br/trac/invesalius

  6. Maas S, Weiss JA. FEBio: Finite Elements for Biomechanics. 2008 [Consulta: diciembre 2012].Disponibeen: http://mrl.sci.utah.edu/software

  7. Bergmann G, GraichenF,Rohlmann A. Hip contact forces and gait patterns from routine activities. J Biomech. 2001;34(7):859-871.

  8. Ounpuu S. The biomechanics of walking and running.Clin Sports Med. 1994;13(4):843-863.

  9. Park WM, Kim Y H, Kim K, Oh TY. Non-destructive biomechanical analysis to evaluate surgical planning for hip joint diseases. International Journal of Precision Engineering and Manufacturing. 2009;10(3):127-131.

  10. Brand R, Iglic A, Kralj-Iglic V. Contact stresses in the human hip: implications for disease and treatment. Hip international. 2001;11(3):117-126.

  11. Butz K D, Chan DD, Nauman E A ,Neu CP. Stress distributions and material properties determined in articular cartilage from MRI-based finite strains. J Biomech. 2011;44(15):2667-2672.

  12. Park S, Hung CT, Ateshian GA. Mechanical response of bovine articular cartilage under dynamic unconfined compression loading at physiological stress levels. Osteoarthritis Cartilage. 2004;12(1):65-73.

  13. Anderson A E, Ellis BJ, Maas SA, Peters CL, Weiss JA. Validations of finite element predictions of cartilage contact pressure. J Biomech Eng. 2008;130(5):051008.

  14. Chegini S, Beck M, Ferguson SJ. The effects of impingement and dysplasia on stress distributions in the hip joint during sitting and walking: a finite element analysis. J Orthop Res. 2008;27(2):195-201.

  15. Kabel J, Van Rietbergen B, Dalstra M, Odgaard A ,Huiskes R. The role of an effective isotropic tissue modulus in the elastic properties of cancellous bone.JBiomech. 1999;32(7):673-680.

  16. Anderson A E, Ellis BJ, Maas SA,Weiss JA. Effects of idealized joint geometry on finite element predictionsof cartilage contact stresses in the hip. J Biomech. 2010;43(7):1351-57.




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