Research Article
Volume 12 Issue 2 - 2021
Intra-Operative Rotational Alignment Control Using ISO-C 3D in Comparison to Torsion CT Scan: A Cadaveric Study
Khalifa Ahmed1*, Alaidarous Hasan2, Krettek Christian1 and Stuebig Timo1
1Department of Trauma, Hannover Medical School (MHH), Hannover, Germany
2Department of Orthopedic, Hospital of the Ludwig-Maximilians-University (LMU), Marchioninistraße 15, Munich, Germany
*Corresponding Author: Khalifa Ahmed, Department of Trauma, Hannover Medical School (MHH), Hannover, Germany.
Received: December 02, 2020; Published: January 30, 2021


Introduction: Femur shaft fracture is relatively common and usually treated operatively. Among the different post-operative complications is rotational malalignment, which can affect the patient’s gait, and quality of life both cosmetically and physically.

To assess the femoral torsion, a post-operative axial CT or MRI scan of both limbs is performed. However, applying the Linea aspera method as a reference point together with a mobile 3D C-arm image may provide feasible intra-operative recognition and correction.

Materials and Methods: 21 tissue free femora were scanned twice with CT and Iso-C-3D after mid-shaft osteotomy and 6 different angles of malrotation (internal and external rotations at 10, 20 and 30 degrees). The degree of malrotation after both scans was then compared.

Results: The data gained from Iso-C 3D scans and applying the linea aspera method showed high intra and inter-observer reliability without any significant difference compared to the gold standard (axial CT scans).

Conclusion: Intra-operative 3D scans to assess the rotational malalignment provides a reliable method that can be used when available in cases of transverse and short oblique fracture of the femur and especially in cases of bilateral fracture.

Keywords: Iso- C 3D; Linea Aspera; Femoral Torsion


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Citation: Khalifa Ahmed., et al. “Intra-Operative Rotational Alignment Control Using ISO-C 3D in Comparison to Torsion CT Scan: A Cadaveric Study”.EC Orthopaedics 12.2 (2021): 48-54.

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