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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
"Visualizing MSK Radiology: A Practical Guide to Radiology Mastery"
© 2022 MSK MRI Jee Eun Lee All Rights Reserved.
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