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Bony and soft tissue landmarks of the ACL tibial insertion site: an anatomical study

  • Mario Ferretti
  • Daniel Doca
  • Sheila M. Ingham
  • Moises Cohen
  • Freddie H. FuEmail author
Knee

Abstract

Purpose

To identify and describe reliable landmarks for tibial tunnel placement in anatomical ACL reconstruction.

Methods

Eight non-paired cadaveric knees were used. After dissection, the tibial plateaus, menisci and ACL insertions were grossly observed to identify anatomical landmarks and relate them to the ACL insertion site. The specimens were scanned with a laser scanner, and 3-Dimensional images were obtained. Measurements of the ACL tibial insertion were taken. The center of the ACL and its bundles was measured regarding the distance from the medial tibial eminence and intermeniscal ligament.

Results

The medial tibial eminence demonstrated a constant relationship with the ACL tibial insertion site center and its bundles, as well as the intermeniscal ligament. The anterior root of the lateral meniscus had a variable relationship with the ACL tibial insertion. The length of the ACL tibial insertion was 18.1 ± 2.8 mm and the width was 10.7 ± 1.9 mm. The width of the AM bundle was 11.1 ± 2.1 mm and the PL 7.9 ± 2.0 mm. The ACL center was 9.1 ± 1.5 mm posterior to the intermeniscal ligament and 5.7 ± 1.1 mm anterior to a projected line from the apex of the medial tibial eminence. The center of the AM bundle was at 4.6 ± 0.7 mm posterior to the intermeniscal ligament. The center of the PL bundle was 1.4 ± 0.7 mm anterior to the medial tibial eminence.

Conclusion

The medial tibial eminence and the intermeniscal ligament may be used as landmarks to guide the correct tunnel placement in an anatomical ACL reconstruction.

Keywords

Anterior cruciate ligament (ACL) Anatomical reconstruction Osseous landmark Tunnel placement Tibial insertion 

Notes

Acknowledgments

The support of the Albert B. Ferguson, Jr. MD Orthopaedic Fund of The Pittsburgh Foundation is gratefully acknowledged.

Conflict of interest

The senior author (FF) receives a research/education grant from Smith & Nephew.

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Copyright information

© Springer-Verlag 2011

Authors and Affiliations

  • Mario Ferretti
    • 1
  • Daniel Doca
    • 1
  • Sheila M. Ingham
    • 2
  • Moises Cohen
    • 1
  • Freddie H. Fu
    • 2
    Email author
  1. 1.Department of Orthopaedic Surgery, School of MedicineFederal University of São Paulo, UNIFESPSão PauloBrazil
  2. 2.Department of Orthopaedic SurgeryUniversity of PittsburghPittsburghUSA

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