arthroscopic pictures

Discoid Meniscus

DefinitionDiscoid Meniscus

 

Round or "D" shaped rather than crescenteric meniscus

- occupies > 70% of tibial surface

- 90% occur on lateral side

 

Epidemiology

 

Uncommon

- 1:100

- usually presents in children & adolescents

 

Background

 

ACL Normal ArthroscopyACL Normal Arthroscopy

 

Anatomy

 

Developmental Anatomy

 

Knee joint first appears as a mesenchymal cleft at 8 weeks gestation

- ACL and PCL separate entities by week 10