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Related Experiment Video

Updated: May 30, 2026

Knotless Independent Double-Row Repair and Biceps Augmentation for Anterosuperior Rotator Cuff Tears
05:25

Knotless Independent Double-Row Repair and Biceps Augmentation for Anterosuperior Rotator Cuff Tears

Published on: January 23, 2026

Double-bundle ACL surgery demonstrates superior rotational kinematics to single-bundle technique during dynamic task.

A Hemmerich1, W van der Merwe, M Batterham

  • 1Department of Human Biology, University of Cape Town, South Africa. a.hemmerich@alumni.utoronto.ca

Clinical Biomechanics (Bristol, Avon)
|July 30, 2011
PubMed
Summary

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Double-bundle anterior cruciate ligament reconstruction offers better rotational knee stability than single-bundle during dynamic movement. This study found double-bundle improved rotational control closer to normal after surgery.

Area of Science:

  • Orthopedic surgery
  • Biomechanics
  • Sports medicine

Background:

  • Anterior cruciate ligament (ACL) rupture often leads to residual rotational knee instability after traditional single-bundle repair.
  • Double-bundle ACL reconstruction shows promise for improved rotational restraint compared to single-bundle techniques.
  • Previous comparisons were limited to passive conditions, not dynamic, weight-bearing activities.

Purpose of the Study:

  • To compare rotational knee kinematics between single-bundle and double-bundle ACL reconstruction techniques.
  • To evaluate these differences under physiological, weight-bearing, dynamic conditions.
  • To assess post-operative kinematics against uninjured controls.

Main Methods:

  • Twenty-two patients with isolated ACL ruptures were randomized to single- or double-bundle reconstruction.

Related Experiment Videos

Last Updated: May 30, 2026

Knotless Independent Double-Row Repair and Biceps Augmentation for Anterosuperior Rotator Cuff Tears
05:25

Knotless Independent Double-Row Repair and Biceps Augmentation for Anterosuperior Rotator Cuff Tears

Published on: January 23, 2026

  • Three-dimensional knee kinematics were captured during a dynamic cutting task.
  • Pre- and post-operative rotational range of motion was compared between groups and with controls.

    • Main Results:

    • No significant difference in overall rotational range of motion was observed under physiological loading.
    • A significant shift towards external rotation occurred in the single-bundle group post-surgery.
    • The double-bundle group's rotational kinematics more closely approximated those of uninjured controls.

    Conclusions:

    • Double-bundle ACL reconstruction provides superior rotational knee kinematics compared to single-bundle reconstruction.
    • This improvement is evident under dynamic, weight-bearing conditions.
    • Double-bundle technique better restores normal rotational knee function post-operatively.