Normally abnormal

Question 1

Answer 1

Question 2

Answer 2

Notch of Harty - normal variant

pseudolesion at the anteriomedial tibial plafond

Question 3

Answer 3

notch of harty = normal variant

• pseudolesion at the anteromedial aspect of the tibial plafond

Question 4

Answer 4

pseudodefect of the capitellum

Pseudodefect of capitellum refers to an abrupt contour change of the posterolateral margin of capitellum on coronal sections and is a potential MRI imaging pitfall giving rise to misinterpretations. It occurs because the width of the articular surface of the capitellum is non-uniform and gradually tapers posteroinferiorly.

Question 5

Answer 5

Meniscal ossicle

normal variant - don’t confuse this with a fracture!!

may be associated with meniscal root tears

Question 6

Answer 6

periosteal desmoid

Periosteal desmoid aka cortical desmoid aka distal femoral metaphyseal irregularity (many different names-yay). This is basically an avulsion injury 2/2 repeated microtrauma. Classic location is an eccentric cortical lucency in the medial femoral metaphysis. Usually young males, and commonly bilateral.