Patellar dysplasia

Patellar dysplasia means an abnormally-shaped patella.

Wiberg Type 1 patella

Wiberg Type 1 patella

Wiberg Type 2 patella

Wiberg Type 2 patellar dysplasia

Wiberg Type 3 patella

Wiberg Type 3 patellar dysplasia

wiberg type 4 patellar dysplasia

Wiberg Type 4 patellar dysplasia

 

Classification of Patellar Dysplasia

The Wiberg classification of the shape of the patella, based upon the relative lengths of the facets, is widely used to describe different patellar shapes.

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Related Content

The unstable patella

A discussion about patellar instability, the factors that may cause the patella to sublux or dislocate, and what can be done about it.

How the kneecap engages in the femur

Illustrated article showing how the patella starts its engagement with the groove of the trochlea.

2016 - First time patellar dislocation in children – risk factors

This is the Editor's interpretation of a paper published in the orthopaedic literature in 2016.

Patella and Trochlear Groove

Quick overview of the kneecap anatomy.

Patellar instability and dislocation

Discussing how the anatomy can affect the tendency to dislocate the patella.

Patella alta and patellofemoral dysplasia

A brief overview of patella how patella alta and trochlear dysplasia lead to patellar instability.

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CLINICAL PUBLICATIONS

The patella morphology in trochlear dysplasia--a comparative MRI study. Fucentese SF, von Roll A, Koch PP, Epari DR, Fuchs B, Schottle PB. Knee. 2006 Mar;13(2):145-50.

See also:

eBook - Factors contributing to an Unstable Patella