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Related Experiment Videos

Anatomic double-bundle posterior cruciate ligament reconstruction using hamstring tendons.

A C Stähelin1, N P Südkamp, A Weiler

  • 1Reconstructive Surgery, Sports Traumatology and Arthroscopy Service, Charité, Campus Virchow-Klinikum, Humboldt-University, Berlin. kruzlifix@staehelin.ch

Arthroscopy : the Journal of Arthroscopic & Related Surgery : Official Publication of the Arthroscopy Association of North America and the International Arthroscopy Association
|January 12, 2001
PubMed
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Anatomic double-bundle posterior cruciate ligament (PCL) reconstruction using a modified arthroscopic technique with hamstring tendon grafts offers improved knee laxity. This method better restores normal knee kinematics compared to traditional single-bundle reconstructions.

Area of Science:

  • Orthopedic Surgery
  • Sports Medicine
  • Biomedical Engineering

Background:

  • Anatomic double-bundle posterior cruciate ligament (PCL) reconstruction demonstrates biomechanical superiority over single-bundle methods in restoring knee laxity.
  • Conventional single-bundle isometric reconstruction has limitations in replicating native PCL function.

Purpose of the Study:

  • To describe a modified endoscopic technique for anatomic double-bundle PCL reconstruction.
  • To utilize a Y-shaped hamstring tendon graft for improved PCL reconstruction outcomes.

Main Methods:

  • Arthroscopic creation of two femoral tunnels within the medial femoral condyle.
  • Fixation of gracilis tendon (posteromedial bundle) in 80° flexion and semitendinosus tendon (anterolateral bundle) in 70° flexion using biodegradable interference screws.

Related Experiment Videos

  • Combined graft fixation in full extension at the tibial tunnel.

    • Main Results:

    • The technique allows for differential fixation of graft bundles, mimicking native PCL bundle function.
    • The stronger semitendinosus graft component is fixed in flexion, while the gracilis component is fixed in extension.
    • Successful arthroscopic anatomic PCL reconstruction was achieved.

    Conclusions:

    • This modified arthroscopic technique provides a viable option for anatomic double-bundle PCL reconstruction.
    • The described method may offer superior restoration of knee kinematics compared to single-bundle isometric techniques.
    • Further clinical evaluation is warranted to confirm long-term efficacy.