What is the best internal fixation in pelvic fracture models with open-book injury and anterior sacroiliac joint disruption?

  • Ismail H. Dilogo Department of Orthopaedic and Traumatology, Faculty of Medicine, Universitas Indonesia, Cipto Mangunkusumo Hospital, Jakarta
  • Immanuel P. Sitorus Department of Orthopaedic and Traumatology, Faculty of Medicine, Universitas Indonesia, Cipto Mangunkusumo Hospital, Jakarta
Keywords: anterior sacroiliac joint disruption, biomechanical study, internal fixation, open-book injury
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Abstract

Background: The best operative management for open-book pelvic injury with anterior sacroiliac disruption (OTA/AO B1.1 classification) is still debated. This biomechanical study aimed to find the best internal fixation technique for such injury.

Methods: Open-book injury with anterior sacroiliac joint disruption was simulated on 25 artificial pelvic bones. Twenty five artificial pelvic bones were divided into 5 groups (n=5 /group) and fixated with five different fixation techniques: 1). 1SP+1IS; 2). 2SP; 3). 2SP+2SIP; 4). 1SP+2IS S1, and 5). 1SP+1IS S1+S2. Biomechanical properties of each fixation technique were assessed using Tensilon® RTF-1310 to measure the resistance to translation and load to failure. Data were statistically analyzed using one-way ANOVA followed by post-hoc Bonferroni test.

Results: The highest mean load to failure of axial forces (1490.36 N) was achieved by the fixation technique using one symphyseal plate and two iliosacral screws located at S1 dan S2. The addition of one iliosacral screw significantly increased the mean load to failure for axial compression (p<0.05).

Conclusion: The addition of sacroiliac joint posterior fixation, either with plate or screw, will increase the fixation biomechanical strength. Single symphyseal plate and two iliosacral screws on S1 and S2 provided the best mechanical resistance to axial loading. Thus, it can be concluded that such fixation technique is best for open-book pelvic injury with anterior sacroiliac disruption.

Author Biography

Ismail H. Dilogo, Department of Orthopaedic and Traumatology, Faculty of Medicine, Universitas Indonesia, Cipto Mangunkusumo Hospital, Jakarta
Consultant, academic staff and researcher, Division of Trauma and Reconstruction, Deparment of Orthophaedic and Traumatology

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Published
2015-12-31
How to Cite
1.
Dilogo IH, Sitorus IP. What is the best internal fixation in pelvic fracture models with open-book injury and anterior sacroiliac joint disruption?. Med J Indones [Internet]. 2015Dec.31 [cited 2019Nov.22];24(4):239-44. Available from: http://mji.ui.ac.id/journal/index.php/mji/article/view/1233
Section
Clinical Research