Journal of Orthopaedics, Trauma and Rehabilitation (Jun 2016)

Magnetic Resonance Imaging Assessment of the Femoral Tunnel Position in Medial Patellofemoral Ligament Reconstruction

  • Tung Leung Kwun,
  • Chester Wai Hung Lie,
  • Wai Lam Chan,
  • Nin Yuan Pan,
  • Hung Lit Chow,
  • Kevin Koon Hung Wong,
  • Siu Bon Woo,
  • Wing Cheung Wong

DOI
https://doi.org/10.1016/j.jotr.2015.03.002
Journal volume & issue
Vol. 20, no. C
pp. 14 – 18

Abstract

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Background/Purpose: Correct femoral tunnel position in medial patellofemoral ligament (MPFL) reconstruction is essential to maintain proper biomechanics of the patellofemoral joint throughout the range of movement. Several techniques have been described for MPFL reconstruction, however, there are few reports describing the accuracy of femoral tunnel positioning assessed postoperatively. Methods: Ten patients having recurrent patellar dislocation with MPFL reconstruction performed in our centre from 2009 to 2013 were analysed. Femoral tunnel position was guided by intraoperative X-ray with landmarks described by Schottle et al, 2007. Postoperative magnetic resonance imaging (MRI) was performed on both knees, and femoral tunnel was assessed with reference to the femoral origin of the MPFL in the nonoperated side. Results: All cases showed an intact MPFL graft, with the majority demonstrating satisfactory femoral tunnel position based on postoperative MRI. Conclusion: MPFL reconstruction with anatomic positioning of the femoral tunnel guided by intraoperative X-ray showed satisfactory accuracy in postoperative MRI results, indicating that a well-positioned MPFL graft results in better clinical outcomes.

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