(Fig 4-B.13) Traumatic Separation of Prepatellar Quadriceps Continuation

https://youtu.be/B9TSlblleEQ

https://youtu.be/w63GyfUeIyw

 

 

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📌Anatomy Review Prepatellar Quadriceps Continuation

• Normally no space between prepatellar quadriceps continuation and anterior patella
• Small fibrocartilage layer can detach from bone, minimizing friction (AJR 2009)
• May explain traumatic separation of this layer from patella without tendon disruption

 

📌Separating Prepatellar Quadriceps Continuation

• Appears as thin fluid anterior to patella with intact tendons
• Seen in patients with anterior knee pain (AJR 2009)
• Do not mistake for simple prepatellar bursitis (MRI Web Clinic 2014)

 

✅ Key Teaching Points

• Prepatellar fluid could represent bursitis or deeper injury to prepatellar quadriceps continuation
• Attachment of this layer may be disrupted in trauma
• Has implications for injury type and treatment approach

 

References: 

AJR 2009; 192:W111–W116 

MRI Web Clinic — May 2014

 

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