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Are TomoFix Locking Plates Really Anatomical for Indian Population?

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Abstract

Purpose

The use of a TomoFix plate can be a challenge in Asian population who inherently have smaller tibial bones. This study aims to find out the normal proximal tibial morphometric measurements in Indian population and to compare the Medial Anterior Radius of Curvature (MAROC) of proximal tibia with the Proximal Part Radius of Curvature (PPROC) of the available TomoFix plates, to estimate conformity of the fit between them.

Methods

Retrospective Computed Tomography (CT) and Magnetic Resonance Imaging (MRI) based proximal tibial measurements were performed on 824 knees, 664 females and 160 males (604 patients). The mean MAROC, mean MAROC in males and mean MAROC in females were compared to the PPROC of TomoFix plates.

Results

The radiological measurements revealed a mean AP length of 45.22 ± 3.79 mm, mean ML width of 69.04 ± 5.01 mm and mean MAROC of 21.88 ± 2.11 mm. The mean MAROC in males was 24.07 ± 2.1 mm, whereas in females it was 21.35 ± 1.75 mm. The mean MAROC, mean MAROC in males and mean MAROC in females when compared to the PPROC of Standard TomoFix plate (38 mm), Small TomoFix and Anatomical TomoFix plates (30 mm) showed a significant difference (p < 0.01), indicating that the radius of curvature of the plate does not match the radius of curvature of the anteromedial tibial plateau.

Conclusion

The TomoFix plates, including Small (Asian Version) and Anatomical plates, are relatively large for the Indian population. Our study may help the implant to designers develop a plate that will better suit the Indian population, improving results and reducing hardware-related complications of MOWHTO.

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(Source: TomoFix Medial High Tibial Plate (MHT) Surgical Technique, DePuy Synthes [21])

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Data Availability

The data that support the findings of this study are available from the corresponding author, [Gupta NR], upon reasonable request.

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Funding

The authors did not receive any financial support or funding for the submitted work.

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Authors and Affiliations

  1. Department of Orthopaedics, Kauvery Hospital, Bengaluru, Karnataka, 560100, India

    Nirav Rajesh Gupta

  2. Department of Orthopaedics, Lokmanya Tilak Municipal Medical College and General Hospital, Sion, Mumbai, Maharashtra, India

    Pooja Baranwal & Rohan Killekar

  3. Department of Radiology, Brussels, UZ, Belgium

    Seema Doering

  4. Eden Critical Care Hospital, Chandigarh, India

    Vishal Raina

  5. Pranav Hospital, Brahmavar, Karnataka, India

    Akshay Nayak

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Contributions

NR Gupta was involved in protocol development and main manuscript writing. PO Baranwal performed data collection and manuscript editing. S Doering contributed to main manuscript. V Raina performed statistical analysis and manuscript editing. A Nayak was involved in figure preparation and manuscript editing. R Killekar collected data.

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Correspondence to Nirav Rajesh Gupta.

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Gupta, N.R., Baranwal, P., Doering, S. et al. Are TomoFix Locking Plates Really Anatomical for Indian Population?. JOIO 58, 495–502 (2024). https://doi.org/10.1007/s43465-024-01119-1

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  • DOI: https://doi.org/10.1007/s43465-024-01119-1

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