How to Achieve an Accurate Anatomical Femoral Tunnel Technique in ACL Reconstruction in the Early Years of Your Consultancy? Femoral Offset Aimer Technique: Consistent and Reproducible Technique

Ellapparadja, Pregash; Ignatius, Joseph A.; Selvaratnam, Veenesh

doi:10.1055/s-0039-1692993

Cited by 3 publications

(1 citation statement)

References 11 publications

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“…[5] A femoral offset aimer is very good technique to prevent the blowout and said to be accurate. [17] In another study done by Ellapparadja et al, [17] they found that the contemporary over-the-top femoral tunnel guides did not provide sufficient offset to allow for an anatomical ACLR. This was because of high intersubject variability of femoral footprint in their subjects.…”

Section: Discussionmentioning

confidence: 99%

Accuracy of transportal femoral aimer in placement of femoral tunnel during arthroscopic anterior cruciate ligament reconstruction: An observational study

Thapa¹,

Joshi

Singh

et al. 2021

JASSM

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Objectives: Incorrect placement of the femoral tunnel can result in failure of anterior cruciate ligament reconstruction. Several techniques have been described in literature to make accurate femoral tunnel. Although eyeballing and femoral offset aimer are commonly used, they are considered to be less accurate if used in isolation. To the best of our knowledge, no study has evaluated the use of combination of eyeballing and offset aimer to make the femoral tunnel. This study aims to evaluate the position of femoral tunnel made by combination of eyeballing and femoral offset aiming device. Materials and Methods: Post-operative radiographs of 50 patients were assessed. True anteroposterior (AP) and lateral view radiographs were used to evaluate the placement of the femoral tunnel using standard methods. The outcome was assessed and compared with the standard location of femoral tunnel as described by Harner et al. and Aglietti et al. Ease of making femoral tunnel and posterior blowout were recorded. Data analysis was performed using Statistical Package for the Social Sciences version 25 statistical analysis software. Results: In the coronal plane (AP view), the mean position of the femoral tunnel from the lateral cortex was at 35.09% ± 3.9% point. In AP plane (lateral view), the mean position of the femoral tunnel was at 80.01% ± 8.02% posteriorly along the Blumensaat’s line. None of the cases had posterior blowout and the technique was said to be easy. Conclusion: Eyeballing supplemented with transportal femoral offset aimer is an easy and accurate method of placing femoral tunnel and avoids posterior wall blowout.

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Section: Discussionmentioning

confidence: 99%

Accuracy of transportal femoral aimer in placement of femoral tunnel during arthroscopic anterior cruciate ligament reconstruction: An observational study

Thapa¹,

Joshi

Singh

et al. 2021

JASSM

View full text Add to dashboard Cite

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Freehand vs. Medial Portal Offset Aimer Technique for Accurate Femoral Tunnel Placement in Arthroscopic ACL Reconstruction

Pehlivanoğlu¹,

Yıldız²

2023

JOIO

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Characteristics of the femoral tunnel of anatomical and isometric single bundle anterior cruciate ligament reconstruction: a modeling analysis based on quadrant method and anatomical landmarks

Yin,

Liao,

Xie

et al. 2024

J Orthop Surg Res

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Purpose To investigate the anatomical features of the femoral tunnel in anatomical and isometric single-bundle ACL reconstruction. Method Thirty-two 3-dimensional knee models were reconstructed based on CT scan (average age: 26.5 ± 6.7 years, 18 males and 14 females, 17 left and 15 right). Multiple anatomical landmarks were identified. Virtual femoral tunnels were created at the deep and high portion of ACL footprint, close to the lateral intercondylar ridge to achieve best anatomy and isometry, simulating an anteromedial portal reconstruction. Anatomical features of the femoral tunnels were analyzed. The position of the femoral tunnel was quantified by the distance to anatomical landmarks and using quadrant methods. The spatial angles, length and outer opening of the femoral tunnels were also evaluated. Results Acceptable tunnels were created in all models. The center of femoral tunnel was slightly higher than the apex of deep cartilage, near the deep one-third point across the shallow-deep dimension of the lateral femoral condyle. Using the quadrant method, the tunnel was located at 28.4% ± 2.2% and 22.2% ± 3.6%, parallel and perpendicular to the Blumensaat line, respectively. The spatial angles of the tunnel were 40°, 33.5° ± 4.1° and 38.2° ± 4.4° on the sagittal, transverse, and coronal planes, respectively. The average tunnel length was 34.8 mm ± 3.8 mm. The outer opening of the tunnels was located at the posterior one-third of the femoral metaphysis. Conclusion The anatomical and isometric positioning of the femoral tunnel can be achieved through anteromedial portal with satisfied tunnel characteristics. The apex of deep cartilage may be used as an anatomical reference for tunnel positioning. When drilled at appropriate orientation, favorable tunnel length, integrity and position of the outer opening can be obtained.

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How to Achieve an Accurate Anatomical Femoral Tunnel Technique in ACL Reconstruction in the Early Years of Your Consultancy? Femoral Offset Aimer Technique: Consistent and Reproducible Technique

Cited by 3 publications

References 11 publications

Accuracy of transportal femoral aimer in placement of femoral tunnel during arthroscopic anterior cruciate ligament reconstruction: An observational study

Accuracy of transportal femoral aimer in placement of femoral tunnel during arthroscopic anterior cruciate ligament reconstruction: An observational study

Freehand vs. Medial Portal Offset Aimer Technique for Accurate Femoral Tunnel Placement in Arthroscopic ACL Reconstruction

Characteristics of the femoral tunnel of anatomical and isometric single bundle anterior cruciate ligament reconstruction: a modeling analysis based on quadrant method and anatomical landmarks

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