examination findings

History

Jacques LisFranc De St-Martin (1790 - 1847)

General Surgeon in Napoleonic army

Mechanism

High energy

1.  Twisting / Abduction injury of forefoot

- original description is fall from horse with foot caught in stirrups

- MVA

2.  Axial Loading

Epidemiology

Sciatica > 2/52 1.6%

M:F = 1:1

Most common L4/5 

L5/S1 inherently stable 

Risk factors

Sedentary lifestyle

Smokers

Frequent driving

Heavy lifting 

Anatomy

Annulus Fibrosis

- circumferential, multilayered rim