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April 17, 2026Orthopaedic Journal of Sports MedicineOpen Access

Passive Laxity With Functional Stability Reveals Potential Bilateral Dynamic Compensatory Mechanisms in Patients Undergoing ACL Reconstruction at Long-term Follow-up

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Authors

JBJillian E. BeveridgeMHMadalyn HagueBrown UniversityMCMeggin Q. CostaBrown University

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Overview

Controlled study evaluates knee stability and compensatory mechanisms in ACLR patients after long-term follow-up, implying potential for adjustment over time.

Key Points

  • Determine the relationship between tibiofemoral alignment and dynamic constraint in ACL reconstruction patients compared to controls.
  • Recruitment of ACLR patients and matched controls from a longitudinal trial
  • 3D tibiofemoral position measurements via computed tomography
  • Dynamic knee kinematics recorded using biplane videoradiography during a 1-leg hop-for-distance task
  • Evaluation of side-to-side differences in knee kinematics as a measure of dynamic constraint.
  • Passive tibial position in ACLR patients was 7.5 mm more anterior compared to controls and 3.1 mm more than their contralateral limb
  • No significant difference in peak dynamic anterior position between surgical and contralateral limbs in ACLR patients (P = .83)
  • Peak anterior tibial position during flexion was 10.3 mm greater in ACLR surgical limbs compared to controls (P = .01).
  • Long-term follow-up suggests a deterioration of ACL graft function but with restored dynamic constraints.

Cite This Study

Beveridge et al. (2026) studied this question.

synapsesocial.com/papers/69e1cf625cdc762e9d858556https://doi.org/10.1177/23259671251414857
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Effect of Matching or Overconstraining Knee Laxity During Anterior Cruciate Ligament Reconstruction on Knee Osteoarthritis and Clinical Outcomes2016 · 42 citations
  2. 2Altered biomechanical strategies and medio-lateral control of the knee represent incomplete recovery of individuals with injury during single leg hop2013 · 47 citations
  3. 3The Effect of Initial Graft Tension After Anterior Cruciate Ligament Reconstruction2012 · 69 citations
  4. 4Longitudinal changes in knee gait mechanics between 2 and 8 years after anterior cruciate ligament reconstruction2017 · 59 citations
  5. 5An Abnormal Tibial Position Is Associated With Alterations in the Meniscal Matrix: A 3-Year Longitudinal Study After Anterior Cruciate Ligament Reconstruction2019 · 5 citations