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📌Iliotibial Band (ITB) Injury in Acute Knee Trauma
✅ Association with ACL Tear and Patellar Dislocation
- In up to two-thirds of cases of IT tract injury, the ACL will also be torn. In up to 20% of cases, patellar dislocation will also have occurred.
- Injury to the ITB is usually an indicator of significant internal derangement, with a strong association with ACL rupture, significant posterolateral corner injury, and acute patellar dislocation.
- (Skeletal Radiol. 2017 May;46(5):605-622) (Skeletal Radiol. 2017 May;46(5):605-622)
✅ Avulsion Fracture at Gerdy's Tubercle
- The iliotibial band inserts on the lateral tibia at the Gerdy tubercle, and although rarely injured, both soft-tissue and osseous avulsions have been reported with a complex PLC injury and concomitant ACL lesions.
- Segond fractures and avulsion of the Gerdy tubercle also have been associated with PLC injuries.
- (RadioGraphics 2016; 36:1776–1791)
✅ Insertional Tendinosis and Peritendonitis
- Unlike Iliotibial band syndrome (ITBS), insertional tendinosis and peritendonitis are not related to chronic compression or friction.
- The pathogenesis of insertional tendinosis usually involves aging and overuse, particularly in unstable joints due to osteoarthrosis.
- MRI may demonstrate thickening and increased intrasubstance intermediate signal intensity, most prominent on fluid-sensitive sequences.
- (Skeletal Radiol. 2017 May;46(5):605-622)
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#kneeinjury, #acltear, #itbandinjury, #patellardislocation, #gerdystubercle, #plcinjury, #tendinosis, #peritendonitis,
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