The Wiberg Classification identifies patellar shape, and is used in documentation.

Wiberg type 1

Type 1

Wiberg type 2

Type 2

Wiberg Type 3

Type 3



Irreducible Acute Patellar Dislocation due to a New Anatomical Variant – the Notched Patella. Duarte-Silva M, Rodeia J, Gomes TM and Guerra-Pinto F. Rev Bras Ortop (Sao Paulo). 2019 Feb; 54(1): 90–94.

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