(Fig 4-B.09) Prepatellar Soft Tissue Anatomy

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https://youtu.be/w63GyfUeIyw

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📌Anatomy of the Prepatellar Bursae

✅ Trilaminar Arrangement

• Superficial transverse fascial layer
• Intermediate oblique aponeurotic layer
• Longitudinally oriented fibers of the rectus femoris tendon

 

✅  Layers and Bursae

• Skin
• Prepatellar subcutaneous bursa
• Superficial transverse fascial layer
• Prepatellar subfascial bursa
• Intermediate oblique aponeurotic layer
• Prepatellar subaponeurotic bursa
• Prepatellar quadriceps continuation (fibrocartilage)
• Patella bone

 

✅ Detailed Anatomy

• Prepatellar subcutaneous bursa: Between skin and superficial fascia.
• Prepatellar subfascial bursa: Between superficial fascia and intermediate aponeurotic fascial layer.
• Prepatellar subaponeurotic bursa: Between aponeurotic layer and deep fibrous layer.
• Prepatellar quadriceps continuation: Thickest layer, vertically oriented fibers from rectus femoris tendon adherent to patella.

 

✅ Imaging Findings

• Superficial bursal fluid: Focal, unilocular fluid arc over patella, patellar tendon, or tibial tubercle.
• Communication between bursae: Unilaminar, bilaminar, or trilaminar appearance when distended.
• Septa within fluid collection: Representing various prepatellar fibrous layers.

References: AJR 2009; 192:W111–W116 RadioGraphics 2018; 38:2069–2101 AJR 2007; 188:W355–W358

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#prepatellarbursa, #kneeanatomy, #bursa, #patella, #imagingfindings, #trilaminararrangement, #subcutaneousbursa, #subfascialbursa, #subaponeurotibursa, #quadricepscontinuation.