With fluid deep to the ITB we have 2 possibilities.
- It's a recess of the suprapatellar bursa or,
- It's a recess of the suprapatellar bursa or,
- It's an ITB bursa (an adventitial bursa which develops due to friction).
- ITB BURSA will NOT communicate with the suprapatellar recess or supraptellar bursa .
- SUPRAPATELLAR RECESS will communicate with the joint via the suprapatellar bursa.
- Follow the axial scans from superior to inferior.
- See if you can spot any communication between the the fluid and the suprapatellar bursa/recess.
- If you can't see any communication it's an ITB bursa.
- You can confuse a normal supra patellar recess with an ITB bursa.
- But the recess will communicate with the joint and the ITB bursa won't.
- On axial scans look for communication between joint/ recess and the fluid collection.
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