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Related Experiment Videos

Endoscopic ACL reconstruction: a technical note on tunnel length for interference fixation

B Kenna1, T M Simon, D W Jackson

  • 1Southern California Center for Sports Medicine, Long Beach.

Arthroscopy : the Journal of Arthroscopic & Related Surgery : Official Publication of the Arthroscopy Association of North America and the International Arthroscopy Association
|January 1, 1993
PubMed
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Bone-patella tendon-bone autograft length varies, potentially causing issues with tibial tunnel fixation. A simple calculation and intraoperative check help estimate required tunnel length, allowing adjustments to prevent graft protrusion.

Area of Science:

  • Orthopedic surgery
  • Biomechanical engineering

Background:

  • Bone-patella tendon-bone (BPTB) autografts are commonly used in anterior cruciate ligament (ACL) reconstruction.
  • Graft length variability can lead to intraoperative complications, such as interference screw fixation failure.
  • Accurate graft sizing is crucial for successful tunnel preparation and fixation.

Purpose of the Study:

  • To present a method for estimating the required tibial tunnel length for BPTB autografts.
  • To provide guidance on intraoperative adjustments to ensure proper graft fit and fixation.

Main Methods:

  • A calculation to estimate the necessary tibial tunnel length based on graft dimensions.
  • Intraoperative measurement using a calibrated drill to confirm tunnel accommodation.
  • Techniques for graft adjustment, including bone plug trimming and tunnel deepening.

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Main Results:

  • A straightforward calculation can predict the tibial tunnel length needed for BPTB autografts.
  • Intraoperative measurements confirm the adequacy of the prepared tunnel.
  • Adjustments can be made to prevent graft protrusion and ensure secure fixation.

Conclusions:

  • Preoperative estimation and intraoperative verification of tibial tunnel length are essential for BPTB autografts.
  • Simple adjustments can resolve issues of graft over-length, optimizing fixation.
  • This approach facilitates successful ACL reconstruction with BPTB grafts.