(Fig 2-D.03) Sidewall impingement with ACL Graft tear

https://youtu.be/X1iS_mw3fB0

https://youtu.be/rbdodKV6lpE

1️⃣ Side Wall Impingement

• Sidewall impingement with the intercondylar fossa is related to the shape of the fossa, graft size, and the presence of osteophytes.
• Coronal MR images show the graft indentation as it curves over the medial aspect of the lateral femoral condyle.
• This condition may be associated with the low positioning of the femoral tunnel opening in the intercondylar notch.

 

Stoller's Orthopaedics and Sports Medicine: The Knee

 

2️⃣ Notch Shape and ACL Injury Risk

• Notch shape is considered a significant risk factor for noncontact ACL injury.
• A narrow notch has been observed in ACL-deficient patients, suggesting a correlation with a smaller and weaker ACL compared to healthy patients who typically have a wider notch.
• In the context of ACL reconstruction, Fujii et al. identified a smaller notch cross-sectional area in patients who developed the "cyclops lesion" due to notch impingement.

 

World J Orthop. 2016 Oct 18;7(10):638-649

Knee Surg Sports Traumatol Arthrosc 2015; 23: 1092-1099

 

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