(Fig 3-B.33) Iliotibial Band Injury from Acute Trauma

https://youtu.be/Ji7iPJOMLkQ

https://youtu.be/6WOItzqJj1g

 

📌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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