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✅Imaging Signs of Isolated Posterolateral Bundle Tear of the ACL
An ACL tear may only involve one bundle. The specific imaging signs of an isolated posterolateral bundle tear include:
1️⃣Gap Sign
- Description: Presence of fluid signal and/or a gap.
- Location: Between the medial aspect of the lateral femoral condyle and the lateral aspect of the mid-ACL.
- Imaging Modalities: Can be seen on either axial or coronal MRI images.
2️⃣Footprint Sign
- Description: Incomplete coverage of the lateral aspect of the tibial spine of the tibia by the distal ACL attachment.
- Location: Specifically observed on the tibial spine.
- Imaging Modalities: Seen only on coronal MRI images.
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