1. Tear of the popliteus tendon
A. Posterolateral (arcuate) complex
LCL
Popliteus tendon
Lateral head of gastrocnemius muscle
Arcuate ligament
Popliteofibular ligament
Fabellofibular ligament
Stoller's Orthopaedics and Sports Medicine: The Knee
B. Posterolateral corner (PLC) injury
Injury to a component of the lateral collateral ligament complex in association with a tear of the popliteus tendon, arcuate ligament, or popliteofibular ligament, and either the ACL or PCL is termed posterolateral corner injury. If not surgically corrected, such injury results in pain and instability with knee hyperextension.
Radiographics. 2014 Mar-Apr;34(2):496-513.
The incidence of PLC injury in the ACL-deficient knee has previously been under-reported. This series demonstrates that nearly 20% of patients with an ACL rupture have some injury to the PLC when evaluated by MRI
Skeletal Radiol. 2017 Aug;46(8):1063-1070.
Low-grade injuries of the PLC are often managed nonoperatively, whereas more significant PLC injuries, or those involving the biceps femoris, fibular collateral ligament, and/or popliteus, may require operative intervention.
Although infrequent, injuries to the PLC can lead to devastating consequences, including chronic knee instability, cartilage damage, and failed cruciate ligament reconstruction, if they are not detected.
C. Popliteus tear
With popliteus tears, it is important to note the site of the tear (intraarticular or extra-articular), the extent of the tear (partial or full-thickness), the presence of a bone fragment if there has been tendon avulsion, and degree of tendon retraction
The popliteus complex is a posterolateral rotary stabilizer of the knee.
#MSKMRI, #virtualMRI, #radiologist, #musculoskeletal
#KneetMRI,#MSKMRI_Knee
#Popliteus, #posterolateralcorner, #PLCI, #LCL, #Bicepsfemoris, #popliteofibular, #anatomy
#영상의학과공부맛집, #영상의학, #영상의학이지은, #안산에이스병원,
© 2022 MSK MRI Jee Eun Lee All Rights Reserved.
모든 컨텐츠의 저작권은 MSK MRI Jee Eun Lee에 있으며, 무단 도용, 배포 및 사용을 금합니다.
사전 협의 없이 무단으로 사용할 경우, 저작권법 등 관련법 위반으로 손해배상 청구 등 민,형사상의 책임과 처벌을 받을 수 있습니다.
You may not distribute or commercially exploit the content.
Nor may you transmit it or store it on any other website or other forms of the electronic retrieval system.
Please contact me. If you would like to use images or videos for anything other than personal use.
