(Fig 4-B.01) Anatomy of the Multilayered Quadriceps Tendon/ Part 1

https://youtu.be/SqmDKNmdeC4

https://youtu.be/w63GyfUeIyw

==============================================

🎥 Check Out All Videos at Once! 📺

👉 Visit Visualizing MSK Blog to explore a wide range of videos! 🩻

https://visualizingmsk.blogspot.com/?view=magazine

📚 You can also find them on MSK MRI Blog and Naver Blog! 📖

https://mskmri.tistory.com/

https://blog.naver.com/mskmri

https://www.instagram.com/msk_mri/

Click now to stay updated with the latest content! 🔍✨

==============================================

📌 Overview of Quadriceps Tendon: 

The quadriceps tendon has a unique laminated appearance on sagittal MR images, with low-signal intensity bands separated by linear fat.

 It can appear in different configurations: trilaminar (56%), bilaminar (30%), or quadrilaminar (8% )

 

1️⃣ Most Superficial Layer:

• Originates from the rectus femoris muscle.

 

2️⃣ Intermediate Layer:

• Formed by the fusion of the tendons of the vastus lateralis and vastus medialis.
• Attaches to the anterosuperior surface of the proximal patella, posterior to the rectus femoris insertion.
• Vastus lateralis tendon is anterior to vastus medialis tendon in the thigh, converging at the patella【RadioGraphics 2018; 38:2069–2101】.

 

3️⃣ Deepest Layer:

• Comprised of the vastus intermedius tendon, which inserts into the anterosuperior surface of the patella.

 

✅ Additional Structures:

 

1️⃣ Tensor of Vastus Intermedius (TVI):

• Newly discovered muscle in the intermediate layer.
• Located between the vastus lateralis and vastus intermedius.
• Merges with a broad, flat aponeurosis before attaching to the medial patella.

 

2️⃣ Prepatellar Quadriceps Continuation:

• Consists of rectus femoris tendon fibers connecting the quadriceps and patellar tendons.
• Very thin and adherent to the patella, making differentiation from the patellar cortex challenging.

 

3️⃣ Articularis Genus (Articular Muscle of the Knee):

• Originates from the distal femur.
• Seen on sagittal MR imaging in most patients.
• Stabilizes the suprapatellar recess and joint capsule during extension.
• Deepest component of the extensor mechanism, inserting on the suprapatellar pouch

 

References:

• RadioGraphics 2018; 38:2069–2101
• Magn Reson Imaging Clin N Am 22 (2014) 601–620
• Knee Surg Sports Traumatol Arthrosc. 2018 Mar;26(3):727-738
• Knee Surg Sports Traumatol Arthrosc. 2018 Mar;26(3):727-738
• AJR 2009; 192:W111–W116

 

"Visualizing MSK Radiology: A Practical Guide to Radiology Mastery"

© 2022 MSK MRI Jee Eun Lee All Rights Reserved.

No unauthorized reproduction, redistribution, or use for AI training.

#QuadricepsTendon, #SagittalMRI, #MusculoskeletalImaging, #RectusFemoris, #VastusLateralis, #VastusMedialis, #VastusIntermedius, #TensorVastusIntermedius, #PrepatellarQuadriceps, #ArticularisGenus