arthroscopic pictures

Mechanism of Injuries

Rotational force incurred while joint partially flexed & extending

- caught between femoral & tibial condyles

- usually valgus & ER / varus & IR

Definition

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

Anatomy

Developmental Anatomy

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

- ACL and PCL separate entities by week 10