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✅Stump Entrapment (SE) Lesions in ACL Injuries ✅
Stump entrapment (SE) lesions are critical considerations in the assessment of anterior cruciate ligament (ACL) injuries, presenting in two distinct types, each with unique morphological characteristics.
1️⃣ Type 1 SE Lesions:
- Characteristics and Formation Type 1 SE lesions typically mimic the appearance of a classic post-operative cyclops lesion characterized by a nodular mass.
- These lesions are predominantly located at the anterior aspect of the intercondylar notch.
- The formation of Type 1 SE lesions is believed to evolve from Type 2 SE lesions, as proposed by Huang et al.
- type 1 SE lesion develops from a type 2 SE lesion, due to chronic impingement of the ACL stump between femur and tibia, resulting in fibrotic changes
- This transition is attributed to the chronic impingement of the ACL stump between the femur and tibia, leading to fibrotic changes.
2️⃣ Type 2 SE Lesions:
- Description In contrast, Type 2 SE lesions exhibit a distinctive morphology, lacking the mass-like appearance characteristic of Type 1 lesions.
- Instead, they feature the anterior portion of the torn ACL folded upon itself, resulting in a thin, tongue-like free end that extends anteriorly out of the intercondylar notch.
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