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Novel Design of Minimal Incision Double Oblique Device for Osteosynthesis (DODO) of Hip: Results of an In-silico Study Based on the Femur Morphometrics of the Northeast (NE) Indian population

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Abstract

Background

Hip fractures account for a large proportion of hospitalization among the trauma cases. Low cost, simple technique, easy removal, and high rate of the bone union makes extramedullary (EM) fixation techniques a preferred choice. A close-fit bone and plate are essential for the success of such implantation. Various studies have found femur morphometry being related to regional features and social differences. Most of the available commercial implants are developed based on the data of the Caucasian population.

Methods

In the herein study, a novel design, Double Oblique Device for Osteosynthesis of hip (DODO), is proposed while considering the regional morphometry of the Northeast (NE) population of India. This study employs finite element (FE) analysis to compare the biomechanical outcome of the new device with that of proximal femoral locking plate (PFLP) and variable angle dynamic hip screw (VA-DHS) on a femur having an Evans type-I intertrochanteric fracture.

Results

The stress shielding was substantially high for the PFLP and VA-DHS in the distal bone fragment (lateral aspect) and for DODO in the femoral head. The difference in axial displacement between the post-implanted DODO-fixed femur and its respective intact femur was predicted to be almost the same as that of PFLP-fixed femur and its respective intact femur.

Conclusion

The computational results found the new device to be a viable alternative to the conventional plating techniques, especially for the NE population of India, and predicted better to comparable biomechanical characteristics.

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Acknowledgements

The authors would like to acknowledge the computational facilities available at the Biomechanics Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, India, which has helped carry out this research study. The study has been partially supported by SERB, India (Grant no. SRG/2019/000235). The authors are also thankful to Sharma Pharmaceutical Pvt Ltd., Gujrat, India, for their generous support by freely providing the PFLP implants for this study.

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Authors and Affiliations

  1. Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India

    Pratik Nag & Souptick Chanda

  2. Department of Orthopaedics, North Eastern Indira Gandhi Regional Institute of Health and Medical Sciences, Shillong, 793018, Meghalaya, India

    Bhaskar Borgohain

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Correspondence to Souptick Chanda.

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The authors hereby declare that there are no potential conflicts of interest regarding any financial support, research, authorship and publication of this article.

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This study was approved by the National Healthcare Group Institutional Review Board.

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Informed consent was obtained from all individual participants included in the study.

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Nag, P., Borgohain, B. & Chanda, S. Novel Design of Minimal Incision Double Oblique Device for Osteosynthesis (DODO) of Hip: Results of an In-silico Study Based on the Femur Morphometrics of the Northeast (NE) Indian population. JOIO 55 (Suppl 2), 385–394 (2021). https://doi.org/10.1007/s43465-021-00408-3

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