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July 2, 2026Journal of Experimental OrthopaedicsOpen Access

Femoral offset aimer use is not associated with improved anatomic accuracy in hamstring ACL reconstruction: A 3D‐CT study

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Authors

FSFrancisco J Simón-SánchezMPMiguel A. Palacios‐FloresSPSimone Perelli

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Overview

Retrospective study assesses tunnel accuracy in hamstring ACL reconstruction, showing no improvement with offset aimer use.

Key Points

  • To evaluate femoral and tibial tunnel positioning after hamstring ACL reconstruction and its association with femoral offset aimer use and surgeon experience.
  • Retrospective cross-sectional study of patients aged 18–50 who underwent primary single-bundle hamstring ACL reconstruction with postoperative 3D-CT imaging.
  • Tunnel positions were assessed using validated 3D-CT measurement methods and classified by anatomical reference ranges.
  • Interobserver reliability was measured using the intraclass correlation coefficient.
  • Femoral tunnels were anatomic in 76.7% of cases; tibial tunnels were anatomic in 67.4%.
  • Use of the offset aimer did not improve femoral anatomic accuracy (p=0.75) but resulted in a more posterior position (30.7% vs. 34.5%; p=0.002).
  • Surgeon experience showed no significant correlation with tunnel placement accuracy for either femoral (p=0.46) or tibial (p=0.99) tunnels.

Cite This Study

Simón-Sánchez et al. (2026) studied this question.

synapsesocial.com/papers/6a45ffd19ed13430313100f9https://doi.org/10.1002/jeo2.70831
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Also Consider

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

  1. 1Comparison of femoral tunnel position and angle with functional outcomes in arthroscopic anterior cruciate ligament reconstruction: Freehand drilling versus offset aimer technique2026
  2. 2Radiological assessment of femoral and tibial tunnel placement in arthroscopic ACL reconstruction using hamstring tendon graft2020
  3. 3Patella tendon autograft use and A‐shaped femoral notch are associated with more anterior and proximal femoral tunnel placement during anterior cruciate ligament reconstruction2026
  4. 4Optimizing Femoral Tunnel Placement in ACL Reconstruction: Effect of a 70-degree Arthroscope and Portal Position2024
  5. 5Assessment of Femoral Tunnel Length and Position in ACL Reconstruction Techniques and its Effect on Stability2022