Patellar morphology
Morphology ratio
Radiography (Lateral)
Magnetic resonance imaging
a : patellar length
b : length of articular surface of patella
Morphology ratio = a / b
Patella (type 1) 1,2-1,5
Patella (type 2) >1,5
Patella (type 3) <1,2
Scott WN. Insall & Scott Surgery of the Knee. Churchill Livingstone. (2011).
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