(Fig 3-B.13) Popliteus Myotendinous Junction Injury

https://youtu.be/-Vl_F8M-mYQ

https://youtu.be/6WOItzqJj1g

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📌 Popliteus Injuries

• Most popliteus tears are extra-articular, involving the muscle or myotendinous portion
• Less common: injuries to the tendon within the popliteal hiatus or near femoral insertion
• Musculotendinous junction or femoral insertion injuries are common in high-grade posterolateral corner (PLC) injuries
• Isolated popliteus injuries represent <10% of cases

✅ Imaging Findings Extra-articular tears:

• Muscle or myotendinous portion tears
• Strain/grade II lesion at myotendinous junction (white arrows)
• Extensive circumferential soft tissue edema

• Popliteus tendon appears intact

 

✅ MRI Findings Injury appearance varies by location and severity:

• Abnormal signal in popliteus muscle
• Irregular tendon contour with peritendinous edema
• Tendon avulsion from femoral attachment

 

Radiographics.2000 Oct;20 Spec No:S91-S102.

Radiol Clin North Am. 2018 Nov;56(6):935-951

 

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