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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.
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