knee plica

Knee Plica

Aetiology

 

Knee forms from 3 separate compartments

 

Plica represents normal embryonic synovial septum that persists into adult life

 

Epidemiology

 

20% of knees have medial patellar plica at arthroscopy

 

Symptomatic plicae much less common 1-2%

 

Mean age 14

 

Types

 

1.  Infrapatellar (ligamentum mucosum)