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Related Experiment Video

Updated: May 31, 2026

Athymic Rat Model for Evaluation of Engineered Anterior Cruciate Ligament Grafts
10:32

Athymic Rat Model for Evaluation of Engineered Anterior Cruciate Ligament Grafts

Published on: March 26, 2015

Surgical technique: revision ACL reconstruction with a rectangular tunnel technique.

Konsei Shino1, Tatsuo Mae, Norimasa Nakamura

  • 1Faculty of Comprehensive Rehabilitation, Osaka Prefecture University/Yukioka Hospital, 3-7-30 Habikino, Habikino, Osaka 583-8555, Japan. k-shino@rehab.osakafu-u.ac.jp

Clinical Orthopaedics and Related Research
|June 29, 2011
PubMed
Summary

The rectangular tunnel ACL reconstruction (RT ACLR) offers a viable solution for revision surgeries, demonstrating acceptable outcomes in patients needing repeat anterior cruciate ligament (ACL) reconstruction.

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Area of Science:

  • Orthopedic Surgery
  • Sports Medicine
  • Biomechanical Engineering

Background:

  • Developed Rectangular Tunnel ACL Reconstruction (RT ACLR) to reduce tunnel size using a 10-mm wide bone-patellar tendon-bone (BTB) graft.
  • RT ACLR tunnels have a cross-sectional area of 50 mm², smaller than the 79 mm² of conventional 10-mm round tunnels.
  • Presumed suitability for revision ACLR with prior malpositioned tunnels.

Purpose of the Study:

  • To evaluate the efficacy of the RT ACLR technique in patients undergoing revision ACL reconstruction.
  • To assess the feasibility and outcomes of the novel RT ACLR procedure.

Main Methods:

  • RT ACLR involved creating two contiguous 5-mm tunnels expanded to 5x10 mm parallelepipeds.
  • The procedure was intended for 31 patients requiring revision ACLR between 2004 and 2008.

Related Experiment Videos

Last Updated: May 31, 2026

Athymic Rat Model for Evaluation of Engineered Anterior Cruciate Ligament Grafts
10:32

Athymic Rat Model for Evaluation of Engineered Anterior Cruciate Ligament Grafts

Published on: March 26, 2015

  • Eighteen patients were followed for a minimum of 24 months, with evaluations including Range of Motion (ROM), International Knee Documentation Committee (IKDC) scores, and KT-1000 stability measurements.

    • Main Results:

    • The RT ACLR technique was successfully applied in 30 out of 31 cases.
    • One graft rerupture occurred at 28 months in the 18 followed patients.
    • Of the remaining 17 patients, 15 achieved full ROM, 11 were IKDC normal, and 6 nearly normal, with KT-1000 stability averaging 1.0 ± 1.5 mm.

    Conclusions:

    • The RT ACLR technique yields acceptable results for one-stage revision anterior cruciate ligament reconstruction.
    • This method may be a beneficial alternative for revision ACL surgeries.